Fig. 4From: Unpredicted clinical manifestation of COVID-19: a unique case report and review of literatureShowing positive immunohistochemical (IHC) expression of BCL-2 in the mantle zones and negative brownish discoloration of the nuclear and cytoplasmic stain. Besides, positive IHC expression of BCL-6 in the germinal centers of the lymph node with reactive hyperplasia, with a brownish discoloration of the nuclear stainBack to article page