PG O'Callaghan

Serum Melatonin Concentrations During Different Stages of the Annual Reproductive Cycle in Ewes

Mark D. Rollag, PG O'Callaghan, G. D. Niswender · Biology of Reproduction · 1978 · 134 citations

Life Sciences, Animal Sciences, Circadian Rhythms +16

Validation of Methods and Quantification of Luteal Receptors for LH throughout the Estrous Cycle and Early Pregnancy in Ewes1

M. A. Diekman, PG O'Callaghan, T. M. Nett et al. · Biology of Reproduction · 1978 · 97 citations · Full text

Life Sciences, Animal Sciences, Endocrinology +17

Effect of Prostaglandin F2α on the Number of LH Receptors in Ovine Corpora Lutea

M. A. Diekman, PG O'Callaghan, Terry M. Nett et al. · Biology of Reproduction · 1978 · 50 citations · Full text

Medicine, Animal Sciences, Endocrinology +15

The Activity of Ovine Luteal Cholesterol Esterase during Several Experimental Conditions1

James L. Caffrey, Paul W. Fletcher, M. A. Diekman et al. · Biology of Reproduction · 1979 · 35 citations

Life Sciences, Biochemistry, Enzyme Mechanism +16

DYNAMICS OF PHOTO-INDUCED ALTERATIONS IN PINEAL BLOOD FLOW

Mark D. Rollag, PG O'Callaghan, G. D. Niswender · Journal of Endocrinology · 1978 · 12 citations

Life Sciences, Endocrinology, Physiology +17