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SIV plasma viral loads and CD4 T cell levels are similar in PAH+ and PAH- SIV-infected rhesus macaques. Serial blood samples were collected throughout the study. (A) Mean plasma virus loads showed no significant difference between macaques that developed PAH (PAH+, n = 11) and macaques that maintained normal hemodynamic parameters throughout the study (PAH–, n = 10). (B) Peripheral blood CD4+ T-cell levels in PAH+ (n = 11) and PAH– (n = 10) macaques.
