title: Control of chromosome condensation in the sea urchin egg.
mesh_terms: D000641:Ammonia / Q000494:pharmacology; D000818:Animals; D002453:Cell Cycle; D002467:Cell Nucleus / Q000648:ultrastructure; D002875:Chromosomes / Q000648:ultrastructure*; D003593:Cytoplasm / Q000502:physiology; D005260:Female; D008297:Male; D008938:Mitosis / Q000187:drug effects; D010063:Ovum / Q000648:ultrastructure; D011506:Proteins / Q000378:metabolism; D012313:RNA / Q000378:metabolism; D012617:Sea Urchins; D013094:Spermatozoa / Q000648:ultrastructure
chemical_list: D011506:Proteins; D012313:RNA; D000641:Ammonia