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. 2017 Jan 18;2017:9601094. doi: 10.1155/2017/9601094

Figure 1.

Figure 1

(a) Both components of the histologic picture are seen in this section. Small-to-medium-sized lymphoid cells with clear cytoplasm and eosinophils are segregated by intervening whorls of spindly follicular dendritic cells (H&E ×320). (b) Numerous PD1+ cells are found in the cellular area of the lesion consistent with AITL (Immunohistochemistry with DAB ×320). (c) Several whorls of follicular dendritic cells are prominent in this section (H&E ×320). (d) The spindle follicular dendritic cells show very strong CD21 immunostaining. Note the negative staining related to the high endothelial venules (Immunohistochemistry with DAB ×320).