Figure 3
From: Primary small-cell neuroendocrine carcinoma of the duodenum – a case report and review of literature

Immunostaining for AE1/AE3 showing (a) diffuse cytoplasmic positivity in the component A, and (b) no reactivity in the component B.
From: Primary small-cell neuroendocrine carcinoma of the duodenum – a case report and review of literature
Immunostaining for AE1/AE3 showing (a) diffuse cytoplasmic positivity in the component A, and (b) no reactivity in the component B.