Examples of FC cell distribution in different samples. a Forward light scatter (FS) versus side light scatter (SS) distribution of the different cell populations in lysed peripheral blood of a healthy patient. b FS versus SS of a fine-needle aspirate taken from a parotid gland in a patient with MALT lymphoma. Mainly small- to medium-sized lymphocytes are evident. c FS versus SS distribution of lymphocytes in a lymph node taken from a patient with DLBCL. Two different populations are clearly evident: large cells are neoplastic B cells and small cells are mainly T-lymphocytes.