“…The antibody dilution titers of antiretrovirus p30 serums were determined by indirect enzymoimmunoassay as described (34). Competition enzymoimmunoassays were developed as described (35) for SSAV/GaLV p28 by using GaLV target and goat IgG anti-SSAV p28 and for BEV/RD-114 p28 by using BEV target and goat IgG anti-RD-114 p28. 1-4), anti-RD-114 p28 serum (lanes 5-7), and normal goat serum (lanes 8-10) against 50 ng of SSAV (lanes 1,6, and 8), 50 ng of GaLV (lane 2), 50 ng of RD-114 (lanes 3, 5, and 9), and 200 ng of MuLV (lanes 4, 7, and 10).…”