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Animal
Female
Rats
animal experiment
estradiol
rat
44
Estradiol
40
Support, Non-U.S. Gov't
32
endocrine system
30
Castration
24
ovariectomy
20
Rats, Inbred Strains
18
article
18
female
18
female genital system
18
progesterone
18
radioisotope
18
subcutaneous drug administration
18
Luteinizing Hormone
16
nonhuman
16
Pregnancy
14
Animalia
12
Pineal Gland
12
Uterus
12
central nervous system
12
hypothalamus
12
luteinizing hormone
12
pineal body
12
Estrus
10
Male
10
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2Publicado 1987
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