Words similar to estrous
Example sentences for: estrous
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The quantity of LH secreted by the anterior pituitary gland is the outcome of an interaction between the amount of hypothalamic GnRH secretion and the level of gonadotrope responsiveness to GnRH [ 7 ] . Quantitatively, gonadotrope responsiveness is more important than the level of GnRH secretion; for example, during the estrogen-stimulated preovulatory surge of LH secretion in the rat there is a 5-fold increase in GnRH secretion but a 50-fold increase in LH secretion [ 7 ] . Moreover, a quantity of GnRH that will evoke a normal preovulatory LH surge during the period preceding ovulation will induce only a small increase in LH secretion at other stages of the estrous cycle [ 7 ] . Similarly, termination of the preovulatory LH surge appears to be due to desensitization of the gonadotrope to GnRH action; in the sheep, a decrease in LH secretion precedes the decrease in GnRH secretion [ 41 ] , whereas in the rat, although the decrease in GnRH and LH secretion are co-incident [ 7 ] , there is evidence that the gonadotrope is already desensitized to GnRH [ 42 43 ] .
One receptor for TNFα, TNF-RI is expressed throughout the bovine estrous cycle [ 46 ] , but is more abundantly expressed by the endothelial cell component than in steroidogenic cells [ 29 ] .
BMP-15 mRNA expression was strictly germ cell specific and was developmentally regulated during normal folliculogenesis over the estrous cycle (Table 1, Fig.
Therefore, we hypothesize the regulated expression of BMP gene activity forms a part of the controlling network that ensures the proper timing of the developmental events that generates a normal estrous cycle.
Adult female Sprague-Dawley rats (2-3 months of age) were housed (four animals per cage) in isolation under controlled lighting conditions (14 h of light, 10 hr of darkness; lights on from 0500 to 1900 h) at 23°C and provided formulated rat chow and water ad libitum . Vaginal smears were taken daily, and rats exhibiting two or more consecutive 4-day estrous cycles were used.
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