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Relative infectivity of mono (B or F Subtype) and dual-infected (B+F) cell culture viral populations. Supernatant from mono an dual-infected cultures from day 18 were collected and used to infect GHOST indicator cell line. Viral inoculums were standardized by P24 antigen content. Forty eight hour post infection percentage of infected cells was measured by flow cytometry. The mean percentage of infected cells for each case are shown. Error bars indicate standard errors.
