title: DNA synthesis turned on in unfertilized sea urchin eggs by treatment with NH4OH.
mesh_terms: D000818:Animals; D001345:Autoradiography; D004247:DNA / Q000096:biosynthesis*; D004261:DNA Replication; D005260:Female; D005306:Fertilization; D006878:Hydroxides / Q000494:pharmacology*; D010063:Ovum / Q000378:metabolism*; D000644:Quaternary Ammonium Compounds / Q000494:pharmacology*; D012617:Sea Urchins; D012623:Seawater; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D006878:Hydroxides; D000644:Quaternary Ammonium Compounds; D014316:Tritium; D004247:DNA; D013936:Thymidine