recently it was shown that angiogenic factors , which belong to the protein families of the heparin binding growth factors ( acidic and basic fibroblast growth factor ) and the transforming growth factors ( tgf-beta 1 and -beta 2 ) , also induce mesodermal tissues in amphibian ectoderm .
C0040691
transforming growth factors
C0080222
tgf-beta 1