The structure of the hypothalamic neurosecretory cells of Zoarces viviparus L. under the conditions of constant dark and light during the reproductive cycle.
D000818:Animals; D003624:Darkness; D005260:Female; D005399:Fishes; D006066:Gonads / Q000502:physiology; D007031:Hypothalamus / Q000166:cytology*; D008027:Light; D009489:Neurosecretion / Q000502:physiology*; D011247:Pregnancy; D011270:Pregnancy, Animal; D012098:Reproduction; D012621:Seasons