Folic acid deficient gammopathy.
D000368:Aged; D001796:Blood Protein Disorders / Q000150:complications*; D005494:Folic Acid Deficiency / Q000150:complications*; D006242:Haptoglobins / Q000032:analysis; D006801:Humans; D008297:Male; D009748:Nutrition Disorders; D008258:Waldenstrom Macroglobulinemia / Q000150:complications
D006242:Haptoglobins