title: An explanation for the heterogeneity in B lymphocyte ecto-5'-nucleotidase activity in patients with hypogammaglobulinemia.
mesh_terms: D015720:5'-Nucleotidase; D000328:Adult; D000361:Agammaglobulinemia / Q000201:enzymology*; D000917:Antibody Formation; D001402:B-Lymphocytes / Q000145:classification / Q000166:cytology / Q000201:enzymology*; D002454:Cell Differentiation; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000201:enzymology*; D009708:Nucleotidases / Q000378:metabolism*
chemical_list: D009708:Nucleotidases; D015720:5'-Nucleotidase