A total of 37 normal breast and 184 breast cancer tissue specimens were obtained from the Department of Pathology, The First Affiliated Hospital of the Fourth Military Medical University (FMMU, Shaanxi, China). Clinical staging of breast cancer was performed based on the American Joint Committee on Cancer (AJCC) staging system. Clinicopathological data were obtained from the patients’ medical records. This study was approved by our institutional research ethics committee. All specimens were immunostained for FOXP3 and MTA1 as previously described using an antibody against FOXP3 (ab10901, Abcam, 1:200 dilution) or MTA1 (#5647, CST, 1:50 dilution) (20 (link)). Sections of stained breast cancer tissue were sent to Google Biology for observation and scanning.
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