Figure 2
From: Estrogen receptor-negative breast carcinomas: a review of morphology and immunophenotypical analysis

Few examples of immunophenotying studies on tissue microarray: (a) Negative immunostain for estrogen receptor; (b) androgen receptor—nuclear positivity; (c) EGFR—membrane stain; (d) CerbB2—strong membrane positivity; (e) BRCA1—positive in lobular carcinoma; (f) BRCA1—negative ductal/no specific type carcinoma with internal positive control.