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Animal
4
Female
Male
Pregnancy
4
Rats
4
Support, Non-U.S. Gov't
endocrine system
radioisotope
rat
4
testosterone h 3
3 oxo 4 etienic acid
2
5alpha androstane 3alpha,17beta diol c 14
2
Body Weight
2
Cattle
2
Circadian Rhythm
2
Depression, Chemical
2
English Abstract
2
Epididymis
2
Epitestosterone
2
Estrus
2
Fertility
2
Ganglia, Sympathetic
2
Genitalia, Male
2
Hamsters
2
Human
2
Light
2
Melatonin
2
Models, Biological
2
Neurotransmitters
2
Organ Weight
2
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4