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- W1980620521 abstract "In order to molecularly characterize rapidly and slowly replicating HIV-1 variants, molecular clones were obtained from a rapid/high virus isolate. This isolate, 4803, had only been passaged in peripheral blood mononuclear cells (PBMC) prior to cloning. Molecular cloning was done in bacteriophage λ-dash using high molecular weight DNA of isolate 4803 infected PBMC. Seven recombinant phages were identified. The clones were found to be related to each other and differed only at 1 or 2 restriction sites (out of 28). The molecular clones were transfected into various cell types by electroporation. The phenotype of progeny viruses was found to be dependent on the cell type used for transfection. Progeny viruses produced by PBMC cultures differed from the parental isolate in that they did not form syncytia and lacked the capacity to replicate in cell lines. Since transfection of PBMC yielded progeny viruses within 1 week, this phenotype is considered to be the true phenotype of the clones. Transfection of the T-lymphoid HUT-78 cell line and of the monocytoid U937-2 cell line yielded progeny viruses after considerable delay (more than 1 month). Progeny viruses from HUT-78 cells were similar to the parental isolate in that they formed syncytia in PBMC and replicated in all cell lines tested. Progeny viruses from U937-2 cells showed an intermediate phenotype in that they replicated in U937-2 but not in T-lymphoid cell lines. These results indicate that molecular clones of a rapid/high virus may have a restricted replicative capacity compared to the parental, genetically heterogenous virus isolate." @default.
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- W1980620521 date "1991-03-01" @default.
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- W1980620521 title "Biological characterization of infectious molecular clones derived from a human immunodeficiency virus type-1 isolate with rapid/high replicative capacity" @default.
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- W1980620521 doi "https://doi.org/10.1016/0042-6822(91)90469-r" @default.
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