Abstract
Summary
A total of 91 cotton rats (Sigmodon hispidus) were collected from their natural habitat once a month for one year. Testes and accessory organs were excised and weighed. Teased tubule preparations of the testis were used to measure oxygen uptake, glucose uptake and lactic acid production. The remainder of testis was assayed for protein, ribonucleic acid (RNA) and deoxyribonucleic acid (DNA). These data indicate that characteristic metabolic and biochemical changes take place in testis during circadian breeding patterns.
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