1. Risau W., Sariola, H., Zerwes, H.-G., Sasse, J., Ekblom, P., Kemler, R., and Doetschman, T. (1988) Vasculogenesis and angiogenesis in embryonic-stem-cell-derived embryoid bodies. Development
102, 471–478.
2. Risau, W. (1995) Differentiation of endothelium. FASEB J. 9, 926–933.
3. Shibuya, M. (1995) Role of VEGF-Flt receptor system in normal and tumor angiogenesis. Adv. Cancer Res.67, 281–316.
4. Astrow, A. B. (1994) Rethinking cancer. Lancet
343, 494–495.
5. Gibbs, J. B. and Oliff, A. (1994) Pharmaceutical research in molecular oncology. Cell
79, 193–198.