Impaired delayed hypersensitivity in an aging population. Association with antinuclear reactivity and rheumatoid factor.
D000328:Adult; D000368:Aged; D000375:Aging; D000974:Antibodies, Antinuclear; D001323:Autoantibodies; D006801:Humans; D006968:Hypersensitivity, Delayed; D008875:Middle Aged; D009578:Nitrobenzenes; D012217:Rheumatoid Factor; D012882:Skin Tests; D014374:Tuberculin Test; D005719:gamma-Globulins
D000974:Antibodies, Antinuclear; D001323:Autoantibodies; D009578:Nitrobenzenes; D005719:gamma-Globulins; D012217:Rheumatoid Factor