title: Cytochemical studies on the protamine-type protein transition in sperm nuclei after fertilization and the early embryonic histones of Urechis caupo.
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D000818:Animals; D000845:Annelida / Q000196:embryology* / Q000378:metabolism; D001345:Autoradiography; D002467:Cell Nucleus / Q000378:metabolism*; D002875:Chromosomes; D004247:DNA / Q000096:biosynthesis; D005260:Female; D005306:Fertilization; D006657:Histones / Q000378:metabolism*; D008297:Male; D011479:Protamines / Q000378:metabolism*; D013094:Spermatozoa / Q000378:metabolism* / Q000648:ultrastructure; D013194:Staining and Labeling; D014316:Tritium
chemical_list: D000596:Amino Acids; D006657:Histones; D011479:Protamines; D014316:Tritium; D004247:DNA