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Breast Cancer : Luminal B

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Molecular Subtypes of Breast Cancer - Luminal B: Microscopic photo showing a high grade invasive breast carcinoma. The tumor cells are positive for ER (estrogen receptor)(see insert), PR (progesterone receptor)(see insert), and HER2/neu with high Ki-67 (proliferation rate)(See next image). Luminal B subtype accounts for about 20% of all breast cancers. Image courtesy of: Jian-Hua Qiao, MD, FCAP, Los Angeles, CA, USA.

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