title: Letter: Combined immunodeficiency disease and A.D.A. deficiency.
mesh_terms: D000241:Adenosine; D000619:Aminohydrolases; D002648:Child; D004912:Erythrocytes / Q000201:enzymology; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000150:complications*; D008659:Metabolic Diseases / Q000150:complications*
chemical_list: D000619:Aminohydrolases; D000241:Adenosine