title: Old and new protein in the formation of the mitotic apparatus in cleaving sea urchin eggs.
mesh_terms: D000818:Animals; D002455:Cell Division; D002499:Centrifugation, Density Gradient; D004247:DNA / Q000378:metabolism; D004447:Echinodermata; D005260:Female; D010063:Ovum / Q000166:cytology / Q000378:metabolism*; D014176:Protein Biosynthesis; D011691:Puromycin / Q000494:pharmacology; D013936:Thymidine / Q000378:metabolism; D014633:Valine / Q000378:metabolism
chemical_list: D011691:Puromycin; D004247:DNA; D014633:Valine; D013936:Thymidine