Secretion of collagen by embryonic neuroepithelium at the time of spinal cord--somite interaction.

Age Factors Animals Autoradiography Axons/cytology Cell Differentiation Chick Embryo Collagen/metabolism Cytoplasmic Granules Lens, Crystalline/embryology Microscopy, Electron Neurofibrils Neurosecretion Organ Culture Techniques Proline/metabolism Spinal Cord/cytology,embryology,metabolism Tritium Trypsin

Tritium Collagen Proline Trypsin