J. Anim Sci.
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J. Anim Sci. 1981. 52:567-574.
© 1981 American Society of Animal Science
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Luteotropic Effects of Bovine Blastocysts

W. E. Beal1, J. H. Lukaszewska2 and W. Hansel

Cornell University3, Ithaca, NY 14853

Abstract

A series of experiments was conducted to determine whether 18-day bovine blastocysts could stimulate synthesis of progesterone by dispersed bovine luteal cells in vitro. Both blastocyst homogenates and extracts of blastocyst homogenates were luteotropic. The luteotropic activity of the blastocysts appeared to be due to one or more heat-labile substances with a molecular weight of less than 12,000 daltons.

Footnotes

1 Present address: Dept. of Anim. Sci., Virginia Polytechnic Inst, and State Univ., Blacksburg 24061.

2 Present address: Institute of Child's Health, Miedzylesie, Poland.

3 Dept. of Physical Biol., Sec. of Physiol






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Copyright © 1981 by the American Society of Animal Science.