FIG. 3.
Set points in FIVPET- or FIVM2-preinfected cats and naïve controls at various times after i.v. challenge with FIVχ. (A) Naïve cats. FIVχ plasma viremia and proviral loads were determined with both the PETgag-specific assay (empty symbols) and the M2env-specific assay (solid symbols). Note that cats in this age range (27 months at challenge) showed no major spontaneous CD4+ T-lymphocyte count changes. (B) FIVPET-preinfected cats. FIVPET (dashed lines) and FIVχ (continuous lines) plasma viremia and proviral loads determined with the PETenv- and M2env-specific assays, respectively. (C) FIVM2-preinfected cats. FIVM2 (dashed lines) and FIVχ (continuous lines) plasma viremia and proviral loads determined with the M2gag- and PETgag-specific assays, respectively. Anti-FIV antibodies were determined by ELISA using whole FIV antigen.