Fig. 4.
Immunoprecipitation analysis of [35S]methionine-labeled lysates using anti-p21Waf1 antibody. [35S]methionine-labeled lysates of T lymphocytes stimulated for 24 hours (A) and 42 hours (B) were immunoprecipitated with anti-p21Waf1 antibody (lanes 1, 3, 5, 7, and 9) or with preimmune serum (lanes 2, 4, 6, 8, and 10). Cells were treated with the drugs indicated from time 0 (1 μmol/L MPA, 50 μmol/L guanosine, 100 μmol/L 8-aminoguanosine, 25 μg/mL 5-FU, 10 μmol/L ara-C). The mobility of protein molecular weight standards p21Waf1 and CDK6 are indicated.