The formation of the heart and blood cells is presided over by several transcription factors whose combinations enable the different parts of the heart to form and allow different types of blood cells to develop. 15.2 Angioblast migration in the chick. After their initial formation in the yolk sac mesoderm, angioblast stem cells are seen in the somites and splanchnic mesoderm. These stem cells populate different regions of the embryo. 15.3 Angiogenesis in diabetes and tumor formation.
Angiogenesis is a critical part of tumor formation and diabetes.
Some newly discovered proteins, such as angiostatin, endostatin, and squalamine, can inhibit angiogenesis and may provide cures for cancers. 15.4 Induction of the lung. The induction of the lung also involves the interplay between FGFs and Shh. However, it appears to be different from the induction of either the pancreas or the liver.