Prolonged and substantial discordance in the prevalence of drug resistance mutations in plasma versus PBMC. Percentages represent the prevalence of the indicated resistance mutations revealed by 454 “deep” sequencing.

Asterisks (*) indicate unavailable samples. Bolded font indicates time points at which subjects were prescribed raltegravir-containing regimens. Superscript a indicates the termination of a raltegravir-containing regimen. Blank cells indicate a wildtype genotype.