title: Longitudinal changes in serum immunoglobulin levels in older humans.
mesh_terms: D000368:Aged; D000375:Aging; D005260:Female; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007136:Immunoglobulins / Q000032:analysis; D008136:Longevity; D008297:Male; D008875:Middle Aged
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins