Western blot analysis of extracts from NCI-H1703 cells serum-starved overnight, untreated (-) or treated with Human Platelet-Derived Growth Factor AA (hPDGF-AA) #8913 (100 ng/ml, 10 min;+), using Phospho-PDGF Receptor α (Tyr762) Antibody (upper) or PDGF Receptor α (D13C6) XP® Rabbit mAb #5241 (lower).