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Nowledgements The authors are grateful to Andile Nofemela and Roman Ntale for technical assistance with viral sequencing. This research was supported by the International Atomic Energy Agency (technical co-operation project RAF/6/ 029), Poliomyelitis Research Foundation (PRF) of South Africa and the University of Cape Town, for collaborative projects with partners in the global South. We thank Ger
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Cias Zembe1, Eitel Mpoudi-Ngole2, Carolyn Williamson1,4 and Wendy A Burgers1*AbstractBackground: Cameroon, in west central Africa, has an extraordinary degree of HIV diversity, presenting a major challenge for the development of an effective HIV vaccine. Given the continuing need to closely monitor the emergence of new HIV variants in the country, we analyzed HIV-1 genetic diversity in 59 plasma s
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Solutions were sterilized by filtration through 0.2 m pore-size filters (Machery-Nagel, D en, Germany). Stock solutions of 100 g/ml recombinant murine IFN- (HyCult biotechnology, Uden, The Netherlands) and 1 mg/ml recombinant murine IFN- (PeproTech, Rocky Hill, NJ, USA) were made in medium. Neutralizing mAb, originally obtained from Dr. Brahic (Institut Pasteur, Paris, France), was diluted in medi
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Issecting the earliest evolutionary steps in the emergence of HIV-1M. Keywords: HIV-1 diversity, West central Africa, RDP3, Maximum likelihood, PHYMLFindings The Congo basin in west central Africa is thought to be the origin of HIV, where several cross-species transmission events from chimpanzees to humans occurred [1,2]. Cameroon, located in this region, has one of the most genetically diverse HI
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Cpx (4 each), and clades A, F, CRF01_AE and CRF36_cpx (2 each). In addition, 22 of the studied viruses apparently had nef and gag genes from viruses belonging to different clades, with the majority (8/10) having either a nef or gag gene derived from CRF02_AG. Interestingly, five gag sequences (10 ) and three (5 ) nef sequences were neither obviously recombinant nor easily classifiable into any
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Hose residing on isolated branches outside of subtrees containing previously defined HIV-1 subtype or CRF lineages. Outlier sequences on the other hand were defined as those residing on basal branches of subtrees containing previously defined HIV-1 subtype or CRF lineages. Nucleotide sequences were deposited in GenBank [JX244899-JX244948 for gag and JX244949JX245003 for nef]. Clinical and demograp
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Zed SRBCs, only rare unopsonized SRBCs appeared bound to ZK1 cells; most cells did not have any unopsonized SRBCs attached. After binding, these unopsonized SRBCs were easily lysed away (Fig. 5A). Approximately 80 of ZK1 cells were positive for FcR-mediated phagocytosis of opsonized SRBCs (Fig. 5B). Similar results were seen in ZK2 and ZK6 clones (data not shown). Decreased binding and phagocytos

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