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Changes in Ovarian Intravascular Compartment Prior to Superovulation in X-Irradiated Rats

Eric W. Hahn and William F. Ward
Radiation Research
Vol. 46, No. 1 (Apr., 1971), pp. 192-198
DOI: 10.2307/3573113
Stable URL: http://www.jstor.org/stable/3573113
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Changes in Ovarian Intravascular Compartment Prior to Superovulation in X-Irradiated Rats
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Abstract

Ovarian retention of radioiodinated serum albumin (RISA) was used as an index of the intravascular compartment of that organ during the estrous cycle in normal rats and in animals exposed to a regimen of x-irradiation known to induce superovulation (400 R whole-body at metestrus). In unirradiated animals, the intravascular space was highest on the morning of metestrus, decreased significantly during diestrus, then increased with the approach of the next estrus. In irradiated animals the large metestrus intravascular compartment persisted throughout the cycle. Choice of anesthesia significantly affected actual ovarian RISA retention, but not the pattern of change through the cycle. Possible role of this radiation response in x-ray-induced superovulation in the rat is discussed.

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