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Neutralization ID50 titers of plasma (reciprocal dilutions) from 85 HIV-1-infected human subjects from the ADARC cohort against 10 HIV-1 Env pseudoviruses as indicated, with clades in parentheses. The dashed horizontal lines indicate the tested limit of 1:25 dilution; resistant values (<25) are plotted between 11 and 20. The study subjects are grouped based on the estimated lengths of their infection times. mpi, months postinfection; YPI, year(s) postinfection.
