{'fraction_non_alphanumeric': 0.016713091922005572, 'fraction_numerical': 0.0, 'mean_word_length': 5.416666666666667, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
BIOLOGICAL ACTIONS OF RELAXIN IN PIGS AND BEEF CATTLE *

The largest amounts of relaxin occur primarily during pregnancy in several mammalian species. The corpus luteum in the pig is a rich source of this hormone. Granulosa lutein cells of the porcine corpus luteum are of particular interest in their production of relaxin, isolated from the water-soluble fraction, and their concomitant secretion of steroids, progesterone and estrogens, isoIated from the lipid-soluble fraction. Hormone secretion profiles by porcine granulosa lutein cells are described in this report in relation to aspects of the fine structure of these cells during different reproductive states. In cattle, endogenous concentrations of relaxin are low as determined by bioassays and radioimmunoassays, and on the basis of porcine relaxin standards. Experimental results are presented on endogenous levels of relaxin during late pregnancy, parturition, and early lactation in beef heifers. The biological effects of relaxin on cervical dilatation and parturition are also described for these two species.