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Progesterone in the Blood of the Laying Hen


FRAPS et al. 1, using the bioassay method of Hooker and Forbes2, reported progestational activity in the peripheral blood of the hen. Layne et al. 3, using chromatographic procedures, failed to find progesterone in chicken blood although they did identify this substance in extracts of ovarian tissue. In preliminary studies in this laboratory4, chemical analysis failed to reveal progesterone in blood obtained by cardiac puncture, though the samples reacted positively to the Hooker–Forbes test.


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LYTLE, I., LORENZ, F. Progesterone in the Blood of the Laying Hen. Nature 182, 1681 (1958).

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