John L. Frehn

Liver and brown fat mitochondrial response to cold in hibernators and nonhibernators.

C C Liu, John L. Frehn, A D Laporta · Journal of Applied Physiology · 1969 · 31 citations

Biology, Energy Metabolism, Biochemistry +9

Effects of temperature, photoperiod, and hibernation on the testes of golden hamsters

John L. Frehn, Chung‐Ching Liu · Journal of Experimental Zoology · 1970 · 26 citations

Fertility, Mammalian Physiology, Reproductive Biology +19

Ultrastructural features of the pineal gland from cold-exposed golden hamsters

Corazon D. Bucana, Mathew J. Nadakavukaren, John L. Frehn · Journal of Neurocytology · 1973 · 26 citations

Animal Physiology, Caprine, Developmental Biology +6

Factors other than Light Affecting the Pineal Gland: Hypophysectomy, Testosterone, Dihydrotestosterone, Estradiol, Cryptorchidism, and Stress

Ronald L. Urry, Kathryn A. Dougherty, John L. Frehn et al. · American Zoologist · 1976 · 24 citations · Full text

Biology, Circadian Rhythm, Chronic Stress +14

EFFECT OF MELATONIN AND SHORT PHOTOPERIOD ON Δ4-REDUCTASE ACTIVITY IN LIVER AND HYPOTHALAMUS OF THE HAMSTER AND THE RAT

John L. Frehn, Ronald L. Urry, L. C. Ellis · Journal of Endocrinology · 1974 · 21 citations

Mammalian Physiology, Exogenous Melatonin, Female Reproductive Function +18