Untreated (–) and treated (+) NIH-3T3 whole cell extracts (30 μg) were separated by 5% SDS-PAGE, and the membrane was blotted with PDGF Receptor beta (phospho Tyr771) antibody [HL3300] (GTX640989) diluted at 1:1000. The HRP-conjugated anti-rabbit IgG antibody (GTX213110-01) was used to detect the primary antibody.