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  1. Book: Bacteriophages

    Tumban, Ebenezer

    methods and protocols

    (Methods in molecular biology ; 2738 ; Springer protocols)

    2024  

    Author's details edited by Ebenezer Tumban
    Series title Methods in molecular biology ; 2738
    Springer protocols
    Collection
    Language English
    Size xvi, 431 Seiten, Illustrationen
    Publisher Humana Press
    Publishing place New York, NY
    Publishing country United States
    Document type Book
    HBZ-ID HT030594043
    ISBN 978-1-0716-3548-3 ; 9781071635490 ; 1-0716-3548-4 ; 1071635492
    Database Catalogue ZB MED Medicine, Health

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  2. Article ; Online: Bacteriophage Virus-Like Particles: Platforms for Vaccine Design.

    Tumban, Ebenezer

    Methods in molecular biology (Clifton, N.J.)

    2023  Volume 2738, Page(s) 411–423

    Abstract: Virus-like particles (VLPs) derived from bacteriophages have many applications in biomedical sciences, especially in the development of candidate vaccines against viral and bacterial infections. Bacteriophage VLPs can be manufactured cheaply and in large ...

    Abstract Virus-like particles (VLPs) derived from bacteriophages have many applications in biomedical sciences, especially in the development of candidate vaccines against viral and bacterial infections. Bacteriophage VLPs can be manufactured cheaply and in large quantities in bacteria compared to eukaryotic expression systems. In addition to this, bacteriophage VLPs are excellent platforms for vaccine design for the following reason: Humans do not have preexisting antibodies against bacteriophage VLPs. Thus, antigens displayed on bacteriophage VLP platforms are expected to be highly immunogenic. As such, VLPs derived from MS2, PP7, Qβ, AP205, P22 bacteriophages, etc. have been used to develop candidate vaccines against human infectious and noninfectious agents. This mini-review summarizes data from some of the candidate bacteriophage-based VLP peptide vaccines that have been developed. The review also highlights some strategies used to develop the candidate bacteriophage-based VLP peptide vaccines.
    MeSH term(s) Humans ; Bacteriophages/genetics ; Bacteriophage P22 ; Vaccine Development ; Antibodies ; Vaccines, Subunit
    Chemical Substances Antibodies ; Vaccines, Subunit
    Language English
    Publishing date 2023-11-15
    Publishing country United States
    Document type Review ; Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-0716-3549-0_24
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Lead SARS-CoV-2 Candidate Vaccines: Expectations from Phase III Trials and Recommendations Post-Vaccine Approval.

    Tumban, Ebenezer

    Viruses

    2020  Volume 13, Issue 1

    Abstract: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is transmitted primarily through respiratory droplets/aerosols and it causes COVID-19. The virus infects epithelial cells by using the spike protein on its surface to bind to angiotensin- ... ...

    Abstract Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is transmitted primarily through respiratory droplets/aerosols and it causes COVID-19. The virus infects epithelial cells by using the spike protein on its surface to bind to angiotensin-converting enzyme 2 receptor on the cells. Thus, candidate vaccines targeting the spike protein are currently being developed to prevent against infections. Approximately 44 SARS-CoV-2 candidate vaccines are in clinical trials (phase I-III) and an additional 164 candidates are in preclinical stages. The efficacy data from phase I/II trials of lead candidate vaccines look very promising with virus-neutralizing geometric mean antibody titers in the range of 16.6-3906. Most recently, two SARS-CoV-2 candidate vaccines, BNT162b2 and mRNA-1273, have been granted the first emergency use authorization (EUA) in the U.S.; BNT162b2 has also been granted an EUA in the United Kingdom, Canada, and in the European Union. This review assesses whether SARS-CoV-2 candidate vaccines (with approved EUA or in phase III trials) meet the criteria for an ideal SARS-CoV-2 vaccine. The review concludes with expectations from phase III trials and recommendations for phase IV studies (post-vaccine approval).
    MeSH term(s) 2019-nCoV Vaccine mRNA-1273 ; Antibodies, Neutralizing/immunology ; BNT162 Vaccine ; COVID-19/prevention & control ; COVID-19 Vaccines ; Canada ; Clinical Trials as Topic ; Clinical Trials, Phase III as Topic ; Clinical Trials, Phase IV as Topic ; Drug Approval ; Europe ; Humans ; SARS-CoV-2 ; Spike Glycoprotein, Coronavirus/immunology ; United Kingdom ; United States ; Vaccines, Synthetic ; mRNA Vaccines
    Chemical Substances Antibodies, Neutralizing ; COVID-19 Vaccines ; Spike Glycoprotein, Coronavirus ; Vaccines, Synthetic ; spike protein, SARS-CoV-2 ; 2019-nCoV Vaccine mRNA-1273 (EPK39PL4R4) ; BNT162 Vaccine (N38TVC63NU)
    Language English
    Publishing date 2020-12-31
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v13010054
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: A Current Update on Human Papillomavirus-Associated Head and Neck Cancers.

    Tumban, Ebenezer

    Viruses

    2019  Volume 11, Issue 10

    Abstract: Human papillomavirus (HPV) infection is the cause of a growing percentage of head and neck cancers (HNC); primarily, a subset of oral squamous cell carcinoma, oropharyngeal squamous cell carcinoma, and laryngeal squamous cell carcinoma. The majority of ... ...

    Abstract Human papillomavirus (HPV) infection is the cause of a growing percentage of head and neck cancers (HNC); primarily, a subset of oral squamous cell carcinoma, oropharyngeal squamous cell carcinoma, and laryngeal squamous cell carcinoma. The majority of HPV-associated head and neck cancers (HPV + HNC) are caused by HPV16; additionally, co-factors such as smoking and immunosuppression contribute to the progression of HPV + HNC by interfering with tumor suppressor miRNA and impairing mediators of the immune system. This review summarizes current studies on HPV + HNC, ranging from potential modes of oral transmission of HPV (sexual, self-inoculation, vertical and horizontal transmissions), discrepancy in the distribution of HPV + HNC between anatomical sites in the head and neck region, and to studies showing that HPV vaccines have the potential to protect against oral HPV infection (especially against the HPV types included in the vaccines). The review concludes with a discussion of major challenges in the field and prospects for the future: challenges in diagnosing HPV + HNC at early stages of the disease, measures to reduce discrepancy in the prevalence of HPV + HNC cases between anatomical sites, and suggestions to assess whether fomites/breast milk can transmit HPV to the oral cavity.
    MeSH term(s) Acquired Immunodeficiency Syndrome/complications ; Disease Transmission, Infectious ; Head and Neck Neoplasms/immunology ; Head and Neck Neoplasms/prevention & control ; Head and Neck Neoplasms/therapy ; Head and Neck Neoplasms/virology ; Human papillomavirus 16/drug effects ; Human papillomavirus 16/genetics ; Human papillomavirus 16/isolation & purification ; Human papillomavirus 16/pathogenicity ; Humans ; Immunosuppression ; Papillomaviridae/drug effects ; Papillomaviridae/genetics ; Papillomaviridae/isolation & purification ; Papillomaviridae/pathogenicity ; Papillomavirus Infections/complications ; Papillomavirus Infections/diagnosis ; Papillomavirus Infections/epidemiology ; Papillomavirus Infections/therapy ; Papillomavirus Vaccines ; Prevalence ; Risk Factors ; Squamous Cell Carcinoma of Head and Neck/immunology ; Squamous Cell Carcinoma of Head and Neck/prevention & control ; Squamous Cell Carcinoma of Head and Neck/therapy ; Squamous Cell Carcinoma of Head and Neck/virology ; Viral Tropism
    Chemical Substances Papillomavirus Vaccines
    Language English
    Publishing date 2019-10-09
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v11100922
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Virus-like Particle Vaccines and Platforms for Vaccine Development.

    Kheirvari, Milad / Liu, Hong / Tumban, Ebenezer

    Viruses

    2023  Volume 15, Issue 5

    Abstract: Virus-like particles (VLPs) have gained a lot of interest within the past two decades. The use of VLP-based vaccines to protect against three infectious agents-hepatitis B virus, human papillomavirus, and hepatitis E virus-has been approved; they are ... ...

    Abstract Virus-like particles (VLPs) have gained a lot of interest within the past two decades. The use of VLP-based vaccines to protect against three infectious agents-hepatitis B virus, human papillomavirus, and hepatitis E virus-has been approved; they are very efficacious and offer long-lasting immune responses. Besides these, VLPs from other viral infectious agents (that infect humans, animals, plants, and bacteria) are under development. These VLPs, especially those from human and animal viruses, serve as stand-alone vaccines to protect against viruses from which the VLPs were derived. Additionally, VLPs, including those derived from plant and bacterial viruses, serve as platforms upon which to display foreign peptide antigens from other infectious agents or metabolic diseases such as cancer, i.e., they can be used to develop chimeric VLPs. The goal of chimeric VLPs is to enhance the immunogenicity of foreign peptides displayed on VLPs and not necessarily the platforms. This review provides a summary of VLP vaccines for human and veterinary use that have been approved and those that are under development. Furthermore, this review summarizes chimeric VLP vaccines that have been developed and tested in pre-clinical studies. Finally, the review concludes with a snapshot of the advantages of VLP-based vaccines such as hybrid/mosaic VLPs over conventional vaccine approaches such as live-attenuated and inactivated vaccines.
    MeSH term(s) Animals ; Humans ; Vaccines, Virus-Like Particle ; Viruses ; Hepatitis B virus ; Vaccine Development
    Chemical Substances Vaccines, Virus-Like Particle
    Language English
    Publishing date 2023-05-02
    Publishing country Switzerland
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15051109
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Potential Applications of Thermophilic Bacteriophages in One Health.

    Liu, Hong / Kheirvari, Milad / Tumban, Ebenezer

    International journal of molecular sciences

    2023  Volume 24, Issue 9

    Abstract: Bacteriophages have a wide range of applications such as combating antibiotic resistance, preventing food contamination for food safety, and as biomarkers to indirectly assess the quality of water. Additionally, bacteriophage components (endolysins and ... ...

    Abstract Bacteriophages have a wide range of applications such as combating antibiotic resistance, preventing food contamination for food safety, and as biomarkers to indirectly assess the quality of water. Additionally, bacteriophage components (endolysins and coat proteins) have a lot of applications in food processing, vaccine design, and the delivery of cargo to the body. Therefore, bacteriophages/components have a multitude of applications in human, plant/veterinary, and environmental health (One Health). Despite their versatility, bacteriophage/component use is mostly limited to temperatures within 4-40 °C. This limits their applications (e.g., in food processing conditions, pasteurization, and vaccine design). Advances in thermophilic bacteriophage research have uncovered novel thermophilic endolysins (e.g., ΦGVE2 amidase and MMPphg) that can be used in food processing and in veterinary medicine. The endolysins are thermostable at temperatures > 65 °C and have broad antimicrobial activities. In addition to thermophilic endolysins, enzymes (DNA polymerase and ligases) derived from thermophages have different applications in molecular biology/biotechnology: to generate DNA libraries and develop diagnostics for human and animal pathogens. Furthermore, coat proteins from thermophages are being explored to develop virus-like particle platforms with versatile applications in human and animal health. Overall, bacteriophages, especially those that are thermophilic, have a plethora of applications in One Health.
    MeSH term(s) Humans ; Animals ; Bacteriophages/metabolism ; One Health ; Endopeptidases/metabolism ; Food Safety ; Food Contamination ; Vaccines/metabolism
    Chemical Substances Endopeptidases (EC 3.4.-) ; Vaccines
    Language English
    Publishing date 2023-05-04
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms24098222
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: A Current Update on Human Papillomavirus-Associated Head and Neck Cancers

    Tumban, Ebenezer

    Viruses. 2019 Oct. 09, v. 11, no. 10

    2019  

    Abstract: Human papillomavirus (HPV) infection is the cause of a growing percentage of head and neck cancers (HNC); primarily, a subset of oral squamous cell carcinoma, oropharyngeal squamous cell carcinoma, and laryngeal squamous cell carcinoma. The majority of ... ...

    Abstract Human papillomavirus (HPV) infection is the cause of a growing percentage of head and neck cancers (HNC); primarily, a subset of oral squamous cell carcinoma, oropharyngeal squamous cell carcinoma, and laryngeal squamous cell carcinoma. The majority of HPV-associated head and neck cancers (HPV + HNC) are caused by HPV16; additionally, co-factors such as smoking and immunosuppression contribute to the progression of HPV + HNC by interfering with tumor suppressor miRNA and impairing mediators of the immune system. This review summarizes current studies on HPV + HNC, ranging from potential modes of oral transmission of HPV (sexual, self-inoculation, vertical and horizontal transmissions), discrepancy in the distribution of HPV + HNC between anatomical sites in the head and neck region, and to studies showing that HPV vaccines have the potential to protect against oral HPV infection (especially against the HPV types included in the vaccines). The review concludes with a discussion of major challenges in the field and prospects for the future: challenges in diagnosing HPV + HNC at early stages of the disease, measures to reduce discrepancy in the prevalence of HPV + HNC cases between anatomical sites, and suggestions to assess whether fomites/breast milk can transmit HPV to the oral cavity.
    Keywords animal viruses ; breast milk ; fomites ; head ; head and neck neoplasms ; human diseases ; immune system ; immunosuppression ; larynx ; microRNA ; mouth ; neck ; squamous cell carcinoma ; vaccines
    Language English
    Dates of publication 2019-1009
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2516098-9
    ISSN 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v11100922
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: Novel expression of coat proteins from thermophilic bacteriophage ΦIN93 and evaluation for assembly into virus-like particles.

    Zhai, Lukai / Anderson, Dana / Bruckner, Elizabeth / Tumban, Ebenezer

    Protein expression and purification

    2021  Volume 187, Page(s) 105932

    Abstract: Virus-like particles (VLPs) have the potential to be used as display platforms to develop vaccines against infectious and non-infectious agents. However, most VLPs used as vaccine display platforms are derived from viruses that infect humans; ... ...

    Abstract Virus-like particles (VLPs) have the potential to be used as display platforms to develop vaccines against infectious and non-infectious agents. However, most VLPs used as vaccine display platforms are derived from viruses that infect humans; unfortunately, most humans already have pre-existing antibodies against these platforms and thus, the immunogenicity of these vaccines may be compromised. VLP platforms derived from viruses that infect bacteria (bacteriophages), especially bacteriophages that infect bacteria, which do not colonize humans are less likely to have pre-existing antibodies against the platforms in the human population. In this study, we assessed whether two putative coat proteins (ORF13 and ORF14) derived from a thermophilic bacteriophage (ΦIN93) can be expressed and purified from a mesophilic bacterium such as E. coli. We also assessed whether expressed coat proteins can assemble to form VLPs. Truncated versions of ORF13 and ORF14 were successfully co-expressed in bacteria; the co-expressed truncated proteins formed oval structures that look like VLPs, but their sizes were less than those of an authentic ΦIN93 virus.
    MeSH term(s) Amino Acid Sequence ; Antibodies, Neutralizing/chemistry ; Antibodies, Neutralizing/genetics ; Antibodies, Neutralizing/metabolism ; Bacterial Infections/metabolism ; Bacteriophages/metabolism ; Capsid Proteins/chemistry ; Capsid Proteins/genetics ; Capsid Proteins/metabolism ; Escherichia coli ; Gene Expression Regulation ; Humans ; Protein Binding ; Vaccines, Virus-Like Particle/chemistry ; Vaccines, Virus-Like Particle/metabolism ; Viruses/genetics ; Viruses/metabolism
    Chemical Substances Antibodies, Neutralizing ; Capsid Proteins ; Vaccines, Virus-Like Particle
    Language English
    Publishing date 2021-06-29
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1055455-5
    ISSN 1096-0279 ; 1046-5928
    ISSN (online) 1096-0279
    ISSN 1046-5928
    DOI 10.1016/j.pep.2021.105932
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Bacteriophage Qβ virus-like particles displaying Chikungunya virus B-cell epitopes elicit high-titer E2 protein antibodies but fail to neutralize a Thailand strain of Chikungunya virus.

    Basu, Rupsa / Zhai, Lukai / Rosso, Brenna / Tumban, Ebenezer

    Vaccine

    2020  Volume 38, Issue 11, Page(s) 2542–2550

    Abstract: Chikungunya virus (CHIKV) is a mosquito-borne virus associated with arthritis and musculoskeletal pains. More than 2.9 million people worldwide have been infected with the virus within the last 1.5 decades; currently, there are no approved vaccines to ... ...

    Abstract Chikungunya virus (CHIKV) is a mosquito-borne virus associated with arthritis and musculoskeletal pains. More than 2.9 million people worldwide have been infected with the virus within the last 1.5 decades; currently, there are no approved vaccines to protect against CHIKV infection. To assess the potential of using CHIKV peptides as vaccine antigens, we multivalently displayed CHIKV peptides representing B-cell epitopes (amino acids 2800-2818, 3025-3058, 3073-3081, 3121-3146, and 3177-3210), from E2 glycoprotein (Singapore strain), on the surface of a highly immunogenic bacteriophage Qβ virus-like particle (VLP). We assessed the immunogenicity of CHIKV E2 amino acid 3025-3058 (including the other epitopes) displayed on Qβ VLPs in comparison to the same peptide not displayed on VLPs. Mice immunized with the E2 peptides displayed on Qβ VLPs elicited high-titer antibodies compared with the group immunized just with the peptide. However, sera from immunized mice did not neutralize CHIKV AF15561 (isolated from Thailand). The data suggest that Qβ VLPs is an excellent approach to elicit high-titer CHIKV E2-protein antibodies at a lower dose of antigen and future studies should assess whether Qβ-CHIKV E2 aa 2800-2818 VLPs and Qβ-CHIKV E2 aa 3025-3058 VLPs can neutralize a Singapore Strain of CHIKV.
    MeSH term(s) Allolevivirus ; Animals ; Antibodies, Viral/blood ; Chikungunya Fever/prevention & control ; Chikungunya virus ; Epitopes, B-Lymphocyte/immunology ; Mice ; Neutralization Tests ; Singapore ; Thailand ; Vaccines, Virus-Like Particle/immunology ; Viral Vaccines/immunology
    Chemical Substances Antibodies, Viral ; Epitopes, B-Lymphocyte ; Vaccines, Virus-Like Particle ; Viral Vaccines
    Language English
    Publishing date 2020-02-07
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 605674-x
    ISSN 1873-2518 ; 0264-410X
    ISSN (online) 1873-2518
    ISSN 0264-410X
    DOI 10.1016/j.vaccine.2020.01.091
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Virus-like Particle-Based L2 Vaccines against HPVs: Where Are We Today?

    Yadav, Rashi / Zhai, Lukai / Tumban, Ebenezer

    Viruses

    2019  Volume 12, Issue 1

    Abstract: Human papillomaviruses (HPVs) are the most common sexually transmitted infections worldwide. Ninety percent of infected individuals clear the infection within two years; however, in the remaining 10% of infected individuals, the infection(s) persists and ...

    Abstract Human papillomaviruses (HPVs) are the most common sexually transmitted infections worldwide. Ninety percent of infected individuals clear the infection within two years; however, in the remaining 10% of infected individuals, the infection(s) persists and ultimately leads to cancers (anogenital cancers and head and neck cancers) and genital warts. Fortunately, three prophylactic vaccines have been approved to protect against HPV infections. The most recent HPV vaccine, Gardasil-9 (a nonavalent vaccine), protects against seven HPV types associated with ~90% of cervical cancer and against two HPV types associated with ~90% genital warts with little cross-protection against non-vaccine HPV types. The current vaccines are based on virus-like particles (VLPs) derived from the major capsid protein, L1. The L1 protein is not conserved among HPV types. The minor capsid protein, L2, on the other hand, is highly conserved among HPV types and has been an alternative target antigen, for over two decades, to develop a broadly protective HPV vaccine. The L2 protein, unlike the L1, cannot form VLPs and as such, it is less immunogenic. This review summarizes current studies aimed at developing HPV L2 vaccines by multivalently displaying L2 peptides on VLPs derived from bacteriophages and eukaryotic viruses. Recent data show that a monovalent HPV L1 VLP as well as bivalent MS2 VLPs displaying HPV L2 peptides (representing amino acids 17-36 and/or consensus amino acids 69-86) elicit robust broadly protective antibodies against diverse HPV types (6/11/16/18/26/31/33/34/35/39/43/44/45/51/52/53/56/58/59/66/68/73) associated with cancers and genital warts. Thus, VLP-based L2 vaccines look promising and may be favorable, in the near future, over current L1-based HPV vaccines and should be explored further.
    MeSH term(s) Capsid Proteins/chemistry ; Capsid Proteins/immunology ; Humans ; Papillomaviridae/immunology ; Papillomavirus Infections/prevention & control ; Papillomavirus Vaccines/immunology ; Peptides/immunology ; Vaccines, Virus-Like Particle/immunology
    Chemical Substances Capsid Proteins ; Papillomavirus Vaccines ; Peptides ; Vaccines, Virus-Like Particle
    Language English
    Publishing date 2019-12-23
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v12010018
    Database MEDical Literature Analysis and Retrieval System OnLINE

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