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Follow-up of FIV infection in three cats infected with TCA FIV. (A) Numbers of proviruses in the peripheral blood mononuclear cells measured by competitive PCR as described previously (25). (B) Antibody titers to whole FIV antigen measured by enzyme-linked immunosorbent assay (25). ○, cat 275; □, cat 311; ▵, cat 583.
