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Immunostaining for the HHV, Lambda and Kappa light chains in a biopsy specimen from the left inguinal lymph node before treatment. (A) Negative immunostaining for HHV. Magnification, ×100. (B) Kappa and (C) lambda positive immunostaining for Lambda and Kappa showing similar proportions of positive cells, indicating a reactive lymphoid hyperplasia. Magnification, ×200. HHV, human herpes virus.
