Factors associated with birth rate and live birth rate in multi-male breeding groups of rhesus monkeys.

Reproductive records of 284 female rhesus monkeys housed in six multimale corrals at the California Primate Research Center were examined for the birth seasons 1977-1982 to determine possible associations between the probability of birth or live birth and female age, parity, origin, parturition in the previous season, infant birth date, and infant birth date in previous season. Multiple logistic regression analysis was used to identify and quantitate the effects of factors on the probability of birth or live birth, while controlling for the possibly confounding effects of other factors in the model. Females who had infants early in the previous season were 2.

Solution conformation of gramicidin S: An intramolecular nuclear Overhauser effect study.

The solution conformation of gramicidin S in deuterated dimethyl sulfoxide was investigated by using the intramolecular nuclear Overhauser effect experiment. Experimental Overhauser enhancements were compared with predicted values for each of the nine most-stable conformations (M1-M9) calculated by Dygert et al. on the basis of energy-minimization procedures [Dygert, M.

Transcervical endometrial biopsy in the baboon: Effects on the menstrual cycle and relations to protein and dry matter content and histology.

The baboon has been used increasingly for reproductive studies. While hormonal regulation of the menstrual cycle and ovulation as well as the endocrinology of gestation have been reported, little information is available describing endometrial parameters. It is the purpose of this paper to describe the ease with which repeated transcervical biopsies can be performed, to describe baseline endometrial protein and dry weight data and to demonstrate that the biopsy procedure itself does not significantly affect the baboons' ability to continue normal menstrual cycle function.