title: An ultrastructural study on the effects of NH4OH on the fertilization of sea urchin eggs.
mesh_terms: D000641:Ammonia / Q000494:pharmacology*; D000818:Animals; D005260:Female; D005306:Fertilization / Q000187:drug effects*; D010063:Ovum / Q000187:drug effects*; D012617:Sea Urchins
chemical_list: D000641:Ammonia