Marván, M L Inescapable shocks accentuate fluctuations of forced swimming immobility in different phases of the rat estrous cycle. [electronic resource] - Archives of medical research 1997 - 369-72 p. digital Publication Type: Journal Article ISSN: 0188-4409 Subjects--Topical Terms: AnimalsDisease Models, AnimalElectroshockEstrus--physiologyFemaleHumansPhysical ExertionPremenstrual Syndrome--physiopathologyRatsRats, WistarSwimming