Results 261 to 270 of about 3,037,859 (309)

Curt Richter and the female rat

Appetite, 2007
Richter fully appreciated the fundamental biological importance of sex differences, in particular the challenges of female reproductive function to the two classes of behavior that most engaged him, endogenous rhythms and "self-regulatory" behaviors.
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Sexual reflexes in male and female rats

Neuroscience Letters, 1988
A novel preparation for the study of male and female sexual function in anesthetized, acutely spinalized rats is reported. In both sexes, the coitus reflex (the neuromuscular concomitants of sexual climax) could be elicited by mechanical stimulation of the distal urethra.
Chung, SK, McKenna, KE, McVary, KT
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LORDOSIS BEHAVIOUR IN MALE, FEMALE AND ANDROGENIZED FEMALE RATS

Journal of Endocrinology, 1976
SUMMARY Sex differences in the lordosis response of adult rats to ovarian hormones were studied in a series of experiments. Male rats were less sensitive to oestradiol benzoate (OB, a single injection of 10, 100 or 1000 μg/kg or seven daily injections of 2, 10 or 50 μg/kg) than were female rats.
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Transplacental effect of diethylstilbestrol in female rats

Cancer Letters, 1979
The effect of diethylstilbestrol propionate (DES; 1 mg/kg body wt. was studied in the female offspring of rats exposed subcutaneously on the 19th day of gestation. Examination of vaginal smears showed persistent estrus in adult rats treated prenatally with DES.
N P, Napalkov, V N, Anisimov
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Induced Hypersensitivity to Barbital in the Female Rat

Science, 1967
Female rats, treated with two daily anesthetic doses of barbital, exhibit 1 month later a significant increase in sleeping time over that of control animals. Hypersensitive animals, as compared to controls, show no alteration in liver weight (as percentage of body weight), but they manifest a significant shortening of time for induction of anesthesia ...
R, Aston, P, Hibbeln
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The striated urethral sphincter in female rats

Anatomy and Embryology, 2003
The aim of this study was to give a microscopic description of the organization, the innervation and the slow or fast type of the striated fibers of the external urethral sphincter in the female rat. Conventional methods for photonic microscopy and immunochemistry were applied to cross and longitudinal sections of snap-frozen urethra.
Praud, Christophe, Sebe, Philippe, Mondet, Fabrice, Sebille, Alain   +3 more
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Sex and the female rat

Trends in Neurosciences, 2001
Dopamine release in the nucleus accumbens (NAcc) correlates with rewarding or reinforcing events, and has been studied extensively in the context of drug abuse, feeding, and sex. Using behavioral indicators and measurements of NAcc dopamine, it appears that sexual activity is rewarding for female rats only if they, rather then the males, are ...
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Comparison of cystometric methods in female rats

Neurourology and Urodynamics, 2007
AbstractAimsRat cystometry is a common model used to investigate urinary storage and voiding function. The effect of cystometric instrumentation in rat studies might be a source of deviation from normal physiologic responses. We hypothesized that transurethral catheterization would produce obstruction‐related changes, and that suprapubic ...
Phillip P, Smith, Eric, Hurtado, Christopher P, Smith, Timothy B, Boone, George T, Somogyi   +4 more
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PROLACTIN LEVELS IN THE PLASMA OF FEMALE RATS

Journal of Endocrinology, 1967
Abstract The isolation and identification of rat prolactin (Kwa, 1965; Kwa, van der Bent & Prop, 1967) made it possible to develop a radioimmunoassay method for the estimation of prolactin in plasma and in pituitary tissue (Kwa & Verhofstad, 1967). Results are now given for plasma levels of prolactin, expressed as ng./ml.
H G, Kwa, F, Verhofstad
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Reproductive Capacity of Aging Female Rats

Neuroendocrinology, 2008
Multiparous female Long-Evans rats, 20 months or older, were seen to progress from irregular estrous cycles to a constant-estrous syndrome to a series of irregular pseudopregnancies to an anestrous state. An animal in constant estrus was characterized by ovaries with well developed and sometimes cystic follicles, no corpora lutea, an estrogen ...
H H, Huang, J, Meites
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