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Figure 2 :(A and B) Nuclei in the neoplastic papillae are immunoreactive for estrogen receptor and progesterone receptor (immunoperoxidase, 100). (C) The absence of c-erbB-2 immunoreactivity (immunoperoxidase, 100). (D) SMA immunostain highlighting stromal cells and vascular structures. No myoepithelial reactivity is evident (immunoperoxidase, 100)

Figure 2 :(A and B) Nuclei in the neoplastic papillae are immunoreactive for estrogen receptor and progesterone receptor (immunoperoxidase, 100). (C) The absence of c-erbB-2 immunoreactivity (immunoperoxidase, 100). (D) SMA immunostain highlighting stromal cells and vascular structures. No myoepithelial reactivity is evident (immunoperoxidase, 100)