Corpora lutea are found only in mammals, and in some elasmobranch fish; in other species, the remnants of the follicle are quickly resorbed by the ovary.
Without the oocyte, the follicle folds inward on itself, transforming into the corpus luteum (pl. corpora lutea), a steroidogenic cluster of cells that produces estrogen and progesterone.
During this day the corpora lutea grow to a maximal volume, achieved within 24 hours of ovulation.
The uteri were removed and trimmed free from the broad ligament, and the corpora lutea on each ovary were recorded to determine the number of ovulations.
Adjusting corpora lutea number for body weight reduced the correlated response but did not eliminate it.
Total corpora lutea were also analysed with the covariate 10-week body weight included in the model.
The corpora lutea were visualized with the aid of a low-power dissecting microscope.
The stage of the estrous cycle was defined by careful examination of the ovaries (follicles and corpora lutea).
