VEGF121b and VEGF165b are weakly angiogenic isoforms of VEGF-A. - Catena, Raúl; Larzabal, Leyre; Larrayoz, Marta; Molina, Eva; Hermida, Jose; Agorreta, Jackeline; Montes, Ramon; Pio, Ruben; Montuenga, Luis M.; Calvo, Alfonso (Molecular Cancer, 2010)