Fig. 6From: Functional exosome-mediated co-delivery of doxorubicin and hydrophobically modified microRNA 159 for triple-negative breast cancer therapyImmunohistochemistry. a Representative H&E staining of tumor and heart tissues. Magnification, × 400. b IHC analysis of Ki67, CD31, TCF, and MYC expression in tumor sections. Scale bar, 500 μmBack to article page