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Science 19 June 1981:
Vol. 212. no. 4501, pp. 1400 - 1402
DOI: 10.1126/science.7233228
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Articles

Science, Vol 212, Issue 4501, 1400-1402
Copyright © 1981 by American Association for the Advancement of Science

articles

Estradiol and progesterone profiles indicate a lack of endocrine recognition of pregnancy in the opossum

JD Harder and MW Fleming

Concentrations of estradiol and progesterone in blood collected during the 12.5-day gestation period of the Virginia opossum were not significantly different from those during equivalent days of the estrous cycle. Progesterone was correlated with an index of corpora luteral mass. Ratio of estradiol to progesterone were highest 3 to 4 days before estrus and on the day of parturition.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Evidence for Spontaneous Postlactational Estrus in Gray Short-Tailed Opossums (Monodelphis domestica).
L. M. Jackson and J. D. Harder (2000)
Biol Reprod 62, 1823-1827
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