title: Collagen synthesis and spicule formation in sea urchin embryos.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D003094:Collagen / Q000096:biosynthesis*; D003460:Crystallization; D006909:Hydroxyproline / Q000378:metabolism; D011392:Proline / Q000378:metabolism; D011485:Protein Binding; D012617:Sea Urchins / Q000196:embryology* / Q000378:metabolism; D013997:Time Factors; D014316:Tritium
chemical_list: D014316:Tritium; D003094:Collagen; D011392:Proline; D006909:Hydroxyproline