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Ck squares at the end of the branches represent the nef sequences sampled from Cameroon in this study, while red squares represent intragene recombinant fragments in our samples. Abbreviations HIV: Human Immunodeficiency Virus; CRF: Circulating recombinant form; URF: Unique recombinant form; RNA: Ribonucleic acid; PCR: Polymerase Chain Reaction. Competing interests The authors declare that they ha
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Allele primers, amplifies a 434 bp DNA fragment from SRA-deficient ZK1, ZK2 and ZK6 cells. With primers for MARCO wild-type allele, amplifies a 500 bp DNA fragment from WT mice; with primers for MARCO mutant allele, amplifies a 850 bp DNA fragment from ZK cells. ZK1, ZK2 and ZK6 clones exhibited both MARCO and SRA-I/II-deficient. PCR products, ca.10 l/each was resolved on a 1.5 agarose gel by gel
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R macrophages which was derived from brochoalveolar lavage (BAL) obtained from MS-/- mice [31]. Immortalization was conducted by infection of the primary AMs from MS/- mice with a retrovirus J2. The immortalized AMs were cloned by limiting dilution method. Three of the clones, designated as ZK-1, ZK-2 and ZK-6 were chosen for further characterization of macrophage phenotype and phagocytic function
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Trees were constructed from these sequences with 100 full maximum likelihood bootstrap replicates (implemented in PHYML [14]), following either complete removal of recombinant sequence fragments or the division of recombinant sequences into their constituent fragments by a blinded fully exploratory screen for recombination using RDP3 [15]. The recombination screen was fully exploratory in that eve
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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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Allele primers, amplifies a 434 bp DNA fragment from SRA-deficient ZK1, ZK2 and ZK6 cells. With primers for MARCO wild-type allele, amplifies a 500 bp DNA fragment from WT mice; with primers for MARCO mutant allele, amplifies a 850 bp DNA fragment from ZK cells. ZK1, ZK2 and ZK6 clones exhibited both MARCO and SRA-I/II-deficient. PCR products, ca.10 l/each was resolved on a 1.5 agarose gel by gel
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Ing time (mean generation time = mgt) was calculated according the formula: N = N02T/mgt. On the average, doubling time of ZK cell lines is between 12 h to 16 h in RPMI complete medium (Fig. 2). Like their parental primary AMs isolated from the MS-/- mice, all of the cell lines are adherent but trypsin-sensitive for passage. Morphology Light microscopic examination of Diff Quik, a modified Wright-
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Kh R, Awazi B, Hewlett I: Increased genetic diversity and intersubtype recombinants of HIV-1 in blood donors from urban Cameroon. J Acquir Immune Defic Syndr 2007, 45:361?63. 6. Ndembi N, Abraha A, Pilch H, Ichimura H, Mbanya D, Kaptue L, Salata R, Arts EJ: Molecular characterization of human immunodeficiency virus type 1 (HIV-1) and HIV-2 in Yaounde, Cameroon: evidence of major drug resistance mu