Lung blastokinin during pregnancy in the rabbit

in Reproduction

The glycoprotein blastokinin was originally thought to be unique to the rabbit uterus (Krishnan & Daniel, 1967) but a similar molecule has been reported to be present in the oviduct (Kay & Feigelson, 1972). Beier & Kühnel (1974) reported its presence in semen and Noske & Feigelson (1976) have found a blastokinin-like antigen in other parts of the female tract, the male tract, and parts of the digestive and respiratory tracts; observations that were confirmed in part by Kirchner & Schroer (1976) and Daniel & Milazzo (1976). Because the amount of blastokinin in the uterus varies with the endocrinological state of the doe, being especially pronounced before implantation, we questioned if the blastokinin-like antigen of other tissues also varies in the same way. Here we report our studies of the blastokinin content of lung tissue throughout early pregnancy with additional comparison of samples taken later in pregnancy and from ovariectomized does, some treated with progesterone, and from males.

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