Western blot analysis of extracts from HepG2 cells, untreated or EGF-treated (100 ng/ml) 18 hours of serum-starvation, and Jurkat cells, untreated or treated with anti-CD3 antibody (1 µg/ml for 10 minutes), using Phospho-Shc (Tyr239/240) Antibody (upper) or Shc antibody #2432 (lower).