title: [Seasonal variability in the cholinergic reaction of the frog heart].
abstract: Seasonal changes in sensitivity to acetylcholine were studied on the isolated frog ventricle. The highest sensitivity was observed in autumn and winter (November-January). In spring, from the period of reproduction, the sensitivity to acetylcholine drops to-threefold and remains at a low level until September. Seasonal changes were more obvious in females. The observed seasonal changes are discussed with reference to ecology, state of reproductive system, etc.
authors.forename: O V
authors.initials: OV
authors.lastname: Boĭko
authors.forename: V I
authors.initials: VI
authors.lastname: Danilova
authors.forename: S N
authors.initials: SN
authors.lastname: Nistramova
mesh_terms: D000109:Acetylcholine / Q000502:physiology; D000818:Animals; D006321:Heart / Q000502:physiology*; D011896:Rana temporaria; D011950:Receptors, Cholinergic / Q000502:physiology*; D012621:Seasons
chemical_list: D011950:Receptors, Cholinergic; D000109:Acetylcholine
vernacular_title: Sezonnaia izmenchivost' kholinergicheskoĭ reaktsii serdtsa liagushki.