Suppressive effects of vascular endothelial growth factor-B on tumor growth in a mouse model of pancreatic neuroendocrine tumorigenesis. oleh Imke Albrecht, Lucie Kopfstein, Karin Strittmatter, Tibor Schomber, Annelie Falkevall, Carolina E Hagberg, Pascal Lorentz, Michael Jeltsch, Kari Alitalo, Ulf Eriksson, Gerhard Christofori, Kristian Pietras