Results 271 to 280 of about 3,037,859 (309)

Storage of copulatory stimulation in the female rat

Physiology & Behavior, 1972
Abstract The copulatory intromissions, delivered by the male rat before ejaculating, trigger the progestational state necessary for ovum implantation and subsequent pregnancy in the female. Since the multiple intromissions' effect is cumulative, there must be some mechanism by which the stimulation from each of the intromissions is stored.
S, Edmonds, S R, Zoloth, N T, Adler
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Episodic Corticosterone Secretion in the Female Rat

Hormone Research, 2008
Studies conducted in several laboratories have shown primate glucocorticoid secretion to occur episodically. In light of the methodological, as well as physiological importance of this finding, the present study was undertaken to determine whether the rat corticosteroid secretion also occurs episodically.
A J, Carrillo, P G, Duke, J D, Dunn
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Laterization of spatial preference in the female rat

Life Sciences, 1983
Female rat pups were either left undisturbed in infancy and raised in lab cages or were handled in infancy and raised in enriched environments. In adulthood, animals underwent brain surgery consisting of: 1) a right neocortical ablation, 2) a left neocortical ablation, 3) a sham operation, or 4) no surgery.
G F, Sherman, J A, Garbanati, G D, Rosen, M, Hofmann, D A, Yutzey, V H, Denenberg   +5 more
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Effects of pinealectomy in the newborn female rat

American Journal of Anatomy, 1967
AbstractThat pinealectomy in the rat is followed by ovarian hypertrophy is an assumption which is rather widely accepted and which is fundamental to much contemporary pineal research. Nevertheless an analysis of the alleged supporting literature shows it to be surprisingly weak and limited to animals operated at three to four weeks of age.
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Morphometry of the aging female rat urethra

International Urogynecology Journal and Pelvic Floor Dysfunction, 1996
Muscles in the limbs change with age, but the aging process of urethral muscles is unknown. Therefore, we compared smooth and striated muscle content in the female rat urethra in young (12 month) and old (32 month) animals, using immunochemical techniques. All the striated skeletal fibers at both ages contain slow myosin.
B, Russell, M, Baumann, M C, Heidkamp, A, Svanborg   +3 more
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Lordosis Response of Senile Female Rats

Neuroendocrinology, 2008
The lordosis response of 27 ovariectomized senile female rats (20 to 32 months old) primed with either estrogen-progestrone (E/P) or estrogen (E) alone was studied and compared with that of ovariectomized young adult rats (3 to 5 months old). As compared with the young rats, out of the 27 senile rats, only 11 showed decreased response with E/P priming ...
M T, Peng, C F, Chuong, Y M, Peng
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Aminopeptidases in the gonads of male and female rats

Fertility and Sterility, 2002
To assess the relative importance of soluble (Sol) and membrane-bound (M-B) components of aminopeptidase (AP) activities in local functions of male and female gonads.Observational study.University research.Adult male and female Sprague-Dawley rats in the proestrous phase of the estrous cycle.Samples from the right testis and the whole right ovary were ...
Isabel, Prieto, Garbiñe, Arechaga, María J, Ramírez-Expósito, Marc, De Gasparo, José M, Martínez-Martos, Manuel, Ramírez   +5 more
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The Onset of Female Puberty: Studies in the Rat

1986
Publisher Summary This chapter discusses the onset of female puberty from the studies in rat. The developmental regulation of the neuroendocrine reproductive axis at the level of its three basic components: the hypothalamus, the anterior pituitary gland, and the ovaries were investigated in both in vivo and in vitro.
S R, Ojeda, H F, Urbanski, C E, Ahmed
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Advancement of Puberty in the Female Rat by Estrogen

Endocrinology, 1965
Puberty, as defined by vaginal opening, ovulation and the initiation of estrous cycles, has been advanced more than a week in the immature female rat by treatment with low, approximately physiological dosages of estrogen (estradiol benzoate, 0.05 μg/100 g body wt/day). These results were achieved either by short-term treatment with estrogen starting at
V D, RAMIREZ, C H, SAWYER
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Metabolism of Procymidone Derivatives in Female Rats

Journal of Agricultural and Food Chemistry, 2009
PCM-CH2OH [N-(3,5-dichlorophenyl)-1-hydroxymethyl-2-methylcyclopropane-1,2-dicarboximide] and PA-CH2OH [2-carboxyl-N-(3,5-dichlorophenyl)-1-hydroxymethyl-2-methylcyclopropane-1-carboxamide] are metabolites of the fungicide procymidone [N-(3,5-dichlorophenyl)-1,2-dimethylcyclopropane-1,2-dicarboximide] in rat.
Hirokazu, Tarui, Jun, Abe, Yoshitaka, Tomigahara, Satoshi, Kawamura, Hideo, Kaneko   +4 more
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