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| | Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal (Site not responding. Last check: ) |
 | | In vertebrates, a special population of embryonic cells called the neural crest has been proposed as a "fourth germ layer", and is thought to have been an important novelty in the evolution of head structures. |
 | | During organogenesis molecular and cellular interactions between germ layers, combined with the cells' developmental potential or competence to respond, prompt the further differentiation of organ-specific cell types. |
 | | Modern developmental biology is extensively probing the molecular basis for every type of organogenesis, including angiogenesis (formation of blood vessels), chondrogenesis (cartilage), myogenesis (muscle), osteogenesis (bone), and many others. |
| www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=embryo (749 words) |
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