A novel vascular endothelial growth factor encoded by Orf virus, VEGF-E, mediates angiogenesis via signalling through VEGFR-2 (KDR) but not VEGFR-1 (Flt-1) receptor tyrosine kinase - Meyer, M; Clauss, M; Lepple-Wienhues, A; Waltenberger, J; Augustin, HG; Ziche, M; Lanz, C; Buttner, M; Rziha, H-J; Dehio, C (EMBO J, 1999)