PDGF-BB induces intratumoral lymphangiogenesis and promotes lymphatic metastasis. by Cao, R, Björndahl, M, Religa, P, Clasper, S, Garvin, S, Galter, D, Meister, B, Ikomi, F, Tritsaris, K, Dissing, S, Ohhashi, T, Jackson, D, Cao, Y