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HIV-1 p24 production in PBMC cultures that are infected by different HIV-1 strains in the presence of various CV-N concentrations. The NL-4.3 strain is X4-tropic; the Ba-L, ETH2220, ID 12, BZ163, and UG273 strains are R5-tropic. The p24 levels in the PBMC supernatants are expressed as percentages of p24 production in the untreated virus-infected control cultures.
