(A, B) While evaluating the intracellular signaling mediating VEGF-A and VEGF-C secretion by fibroblasts, we found that ERK and JNK inhibition abrogated the stimulatory effects of PDGF-D on both VEGF-A (A) and VEGF-C (B) secretory levels, similarly to the PDGFRβ inhibitor, imatinib mesylate (IM). n=5–7 experiments in duplicate; **p<0.01 vs Ctrl; ^p<0.05 vs PDGF-D; ^^p<0.01 vs PDGF-D, using two-tail t test.