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IL-2-induced phosphorylation of PI 3-K. (A) IL-2 induces phosphorylation of p85 in normal PHA blasts. (B) IL-2 induces phosphorylation of p85 in Molt4β cells (lane 4 versus lane 3) but not in Molt4 cells (lanes 1 and 2). Immunoprecipitations (IP) and Western blotting were performed as for Fig. 7.
