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Effect of Her2 and PD168393 on protein tyrosine phosphorylation. (A) Western blot with anti-phosphotyrosine antibody on lysates from 3T3-Her2 or empty vector cells. (B) 3T3-Her2 cells treated for 1 h with PD168393, gefitinib, or DMSO vehicle were blotted as in A. (C) 3T3-Her2 cells treated with 0.5 μM PD168393 for the indicated times were blotted as in A.
