title: Evidence for B-cell origin of reticulum cell sarcoma.
mesh_terms: D001402:B-Lymphocytes; D002474:Cell-Free System; D004721:Endoplasmic Reticulum; D004950:Esterases / Q000032:analysis; D006644:Histiocytes; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D002479:Inclusion Bodies; D008228:Lymphoma, Non-Hodgkin / Q000201:enzymology / Q000276:immunology* / Q000473:pathology; D008854:Microscopy, Electron; D011132:Polyribosomes
chemical_list: D007070:Immunoglobulin A; D007075:Immunoglobulin M; D004950:Esterases