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Saliva ovulation test for rising oestrogen levels as bitch is near ovulation. As oestrogen levels rise, the salt content of saliva increases too and when the salt dries it crystallises into a fern-like pattern.
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![]() Vaginal cytology is performed on female dogs during their estrus cycle to help determine the optimum time to breed and improve the chances pregnancy. The types of cells present in the vagina vary depending on the stage of estrus. A swab is taken of the cells lining
the vagina and analysed under a microscope. Usually more than one swab
is required to determine the optimum time to breed.
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