Preliminary study of the sexual cycle of the South-American nutria (Myocastor coypus) by the method of exfoliative colpocytology [review]

analyse histocytologique biological differences cell structure ciclo estral citologia coipo comportamiento sexual comportement sexuel coypus cycle oestral cytologie cytology estructura celular fur bearing animals histocytological analysis leucocitos leucocyte leukocytes oestrous cycle ragondin sexual behaviour structure cellulaire vagin vagina