| http://www.w3.org/ns/prov#value | - Consequently, careful planning of mating time by timing ovulation is a key step in canine artificial insemination. 5.2 Vaginal cytology and progesterone blood levels Determination of blood progesterone and the vaginal cell cornification on cytological specimens are the most widely used techniques (Linde Forsberg, 2003), to which recently has been added the vaginal endoscopy (that replaces the vagi
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