AMACR and prostate intraepithelial neoplasia: One pair includes two images from consecutive sections stained respectively for hematoxylin and eosin (H&E) and antibodies directed against p63 and Alpha-methylacyl-CoA racemase (AMACR), a combination of proteins used in routine clinical diagnostics to identify basal cells and high grade prostate intraepithelial neoplasia (HGPIN)/PCa cells, respectively.