title: Effects of brain extracts on oocyte maturation in Helisoma (Pulmonata: Mollusca).
mesh_terms: D000818:Animals; D001921:Brain; D005260:Female; D008974:Mollusca / Q000033:anatomy & histology / Q000187:drug effects*; D009865:Oocytes / Q000187:drug effects* / Q000648:ultrastructure; D009866:Oogenesis / Q000187:drug effects*; D010058:Oviposition / Q000187:drug effects*; D010063:Ovum / Q000187:drug effects*; D014020:Tissue Extracts / Q000494:pharmacology*
chemical_list: D014020:Tissue Extracts