title: Egg retention in four snakes.
mesh_terms: D000758:Anesthesia / Q000662:veterinary; D000818:Animals; D005260:Female; D007773:Lactates / Q000627:therapeutic use; D019344:Lactic Acid; D010057:Oviducts / Q000601:surgery; D010058:Oviposition; D010121:Oxytocin / Q000627:therapeutic use; D012911:Snakes / Q000502:physiology* / Q000601:surgery
chemical_list: D007773:Lactates; D019344:Lactic Acid; D010121:Oxytocin