Calcium Carbonate Concretions: Cyclic Occurrence in the Hamster Vagina
- 5 November 1971
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 174 (4009) , 600-603
- https://doi.org/10.1126/science.174.4009.600
Abstract
Three crystalline forms of calcium carbonate were identified in washings of the hamster vagina. Spherical concretions of vaterite and hexagonal concretions of calcite predominate on days 3 and 4 of the 4-day estrous cycle. Dumbbell-like concretions of aragonite predominate during pregnancy and pseudopregnancy. Each polymorph is associated with an acid-insoluble matrix. Concretions disappear after ovariectomy and reappear during daily injections of estrogen and progesterone.Keywords
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