title: Extension of fertilizability in the sand dollar egg with vitamin B12.
mesh_terms: D000818:Animals; D045728:Corrinoids; D006397:Hematinics; D006801:Humans; D010063:Ovum / Q000494:pharmacology*; D012617:Sea Urchins; D014805:Vitamin B 12 / Q000494:pharmacology*
chemical_list: D045728:Corrinoids; D006397:Hematinics; D014805:Vitamin B 12
keywords: OVUM/pharmacology; VITAMIN B 12/pharmacology