Fig. 2From: Unusual apocrine carcinoma with neuroendocrine differentiation: a cutaneous neoplasm may be analogous to neuroendocrine carcinoma with apocrine differentiation of breastImmunohistochemical features of cutaneous mass. Immunohistochemically, the tumor cells were diffusely immuno-positive to CK7 a, CEA b, Synaptophysin c, GCDFP-15 d, and estrogen receptor e. f About 50 % of tumor cells were detected to be positive to androgen receptor (AR). (a-f, immunohistochemical staining with original magnification × 400)Back to article page