Histological and immunohistochemical examination of cervical lymph node biopsy specimens. (A) Histological examination showing well-circumscribed follicles consisting of a monotonous population of predominantly small-cleaved cells (Hematoxylin and eosin stain, ×100). (B) Immunohistochemical examination for bcl-2 showing positive staining in the small-cleaved cells (Immunohistochemical stain, ×400).