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. Author manuscript; available in PMC: 2009 Jul 17.
Published in final edited form as: Neuroscience. 2008 May 7;154(4):1562–1567. doi: 10.1016/j.neuroscience.2008.04.070

Figure 1.

Figure 1

Representative photomicrographs showing smears from rats in metestrus/diestrus, proestrus and estrus. A: Metestrus is characterized by the appearance of small leukocytes, mixed with round or irregular shaped nucleated or squamous epithelial cells in a vaginal smear. B: Diestrus smear has fewer leukocytes mixed with cornified epithelial cells. C: The smear from a proestrus rat is characterized by a predominance of round nucleated cells of uniform size, with a complete absence of leucocytes. Cells are distributed individually or in clusters. D: Estrus, nonnucleated cornified epithelial cells are predominant.

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