the absence of these determinants on malignant histiocytes , and their presence on mfh ( and also on benign fibrous histiocytomas , fibrosarcomas , schwannomas , osteosarcomas , hemangiosarcomas , leio- and rhabdomyosarcomas ) supported the conclusion that mfh tumor cells originate from mesenchymal cells which do not belong to the mononuclear phagocytic system .
C0019612
histiocytes
C0206644
benign fibrous