vIL-6 (ORFK2) expression in the mantle zone of a germinal center in a Castleman's disease (CD) lymph node. vIL-6 is generally not expressed in KS lesions but it is found in both PEL and CD tumors.
vIL-6 (ORFK2) expression in the mantle zone of a germinal center in a Castleman's disease (CD) lymph node. vIL-6 is generally not expressed in KS lesions but it is found in both PEL and CD tumors.