Fig. 1

Morphological and immunohistochemical analyses of the follicular lymphoma. a Infiltration of the lymph node by a nodular proliferation. × 10 lens objective. b Nodules composed of centrocytes. × 40 lens objective. c Bcl-2 expression by the tumor cells. × 10 lens objective. d CD21 immunostaining highlighting the follicular dendritic cell meshwork. × 10 lens objective