title: "In vitro" production of immunoglobulins and rheumatoid factor by peripheral lymphocytes of aged humans.
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000276:immunology*; D006801:Humans; D007136:Immunoglobulins / Q000378:metabolism*; D008214:Lymphocytes / Q000145:classification / Q000378:metabolism; D008875:Middle Aged; D012217:Rheumatoid Factor / Q000378:metabolism*
chemical_list: D007136:Immunoglobulins; D012217:Rheumatoid Factor