Szukana fraza: [Opis = "On 19 females of the European beaver was examined the possibility ofapplying vaginal smears for diagnosis the generative stages. Ascertained was a complete adequacy of this method. Stained smears made it possible to determine explicitly the occurance of proestrus, oestrus and metaestrus. Moreover, the occurence of irregular cycles outside the mating season was stated. A prognosis of cyesis on basis of smears seems possible in the second half of the pregnancy, but does not give a complete certainty"]

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