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Duced CD55 promotes T-cell proliferation and Th1 cytokine expression. In addition to C3 production, APCs cleave C3 leading to autocrine and paracrine C3R signaling. C3R signaling promotes MHC class II expression, IL-12 production and B7 co-stimulatory molecules. Dendritic cells that fail to express C3aR suffer reduced T-cell activation. Anaphylatoxins are well known initiators of inflammation but
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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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Tential impact of HIV-1 diversity on both vaccine development and the sustainability of antiretroviral therapies, it is particularly important that molecular epidemiological surveillance is continued in HIV diversity hotspots such as Cameroon. In this study we have focused on characterizing the diversity of gag and nef genes of Cameroonian HIV-1 isolates. These genes are?2013 Tongo et al.; license
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F known clades. Although the majority of the outlier viruses found in our study were also URFs, they remained outliers after the removal of recombinant segments. It thus appears that these sequences represent viruses that are genuinely highly divergent and are possibly extant descendants of previously unknown early divergingTable 3 Inter and intraclade recombinantsSample ID BS02 BS09 BS11 BS13 BS2
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Replicates following removal of recombinant sequence fragments by a blinded fully exploratory screen for recombination using RDP3. Black squares at the end of the branches represent the gag and nef sequences sampled from Cameroon in this study, while red squares represent intragene recombinant fragments in our samples. The gag tree was rooted using HIV-1 group N, O, P and SIV CPZ isolates, while t
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Mpled sequences are likely CRF02_AG (accounting for 50 of HIV-1M infections), with the other "pure" subtypes (G, D, A, and F) and CRFs (CRF11_cpx, 36_cpx, 37_cpx, and CRF01_AE) accounting for the remainder of infections. CRF02_AG and clade G viruses are broadly distributed across west central Africa and have apparently been circulating stably there for many years [3,17-19], consistent with the pr
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Mpled sequences are likely CRF02_AG (accounting for 50 of HIV-1M infections), with the other "pure" subtypes (G, D, A, and F) and CRFs (CRF11_cpx, 36_cpx, 37_cpx, and CRF01_AE) accounting for the remainder of infections. CRF02_AG and clade G viruses are broadly distributed across west central Africa and have apparently been circulating stably there for many years [3,17-19], consistent with the pr
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Are unaffected by the virus. There are yet questions unanswered and the virus continues to spread unabated. However these immune components are several key elements attractive targets for study that hopefully can advance the field of research.12.13. 14. 15. 16.Competing interestsThe author declares that they have no competing interests.Authors' informationsDavid Gentry Nielsen was born 27, Septemb