Fig. 4From: Occult follicular lymphoma in a swollen regional lymph node of gastric schwannomaa Hematoxylin–eosin staining of the lymph node showing nodular proliferation of atypical lymphoid cells composed predominantly of centrocytes with admixed scattered centroblasts. b–f Immunohistochemical staining revealing that the lymph node is positive for bcl-2 (b), CD20 (c), and CD79a (d) and negative for CD3 (e) and CD30 (f)Back to article page