title: ADA and PNP deficiencies: how it all began.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000201:enzymology / Q000235:genetics; D000243:Adenosine Deaminase / Q000172:deficiency* / Q000378:metabolism; D058892:Adenosine Deaminase Inhibitors; D000818:Animals; D001803:Blood Transfusion; D016026:Bone Marrow Transplantation; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000201:enzymology / Q000235:genetics* / Q000276:immunology / Q000628:therapy; D051379:Mice; D009700:Nucleoside Deaminases / Q000172:deficiency*; D010430:Pentosyltransferases / Q000172:deficiency*; D011683:Purine-Nucleoside Phosphorylase / Q000037:antagonists & inhibitors / Q000172:deficiency* / Q000378:metabolism; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D058892:Adenosine Deaminase Inhibitors; D010430:Pentosyltransferases; D011683:Purine-Nucleoside Phosphorylase; D009700:Nucleoside Deaminases; D000243:Adenosine Deaminase