An Immunohistochemical Study on the Expression of Sex Steroid Receptors in Canine Mammary Tumors

<table>Fibroadenoma showing PR expression in the nuclei of epithelial and stromal cells. Immunoperoxidase/DAB substrate/Mayer’s haematoxylin counterstain x400.</table>

International Scholarly Research Notices

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Figure 4

Figure 4: An Immunohistochemical Study on the Expression of Sex Steroid Receptors in Canine Mammary Tumors 