α‐Glucosidase in Pompe's disease

Abstract
Isoelectric precipitation at pH 5.0 and the use of the inhibitors, turanose, maltose and citrate, enabled the diagnosis of Pompe's disease to be made in dextran-isolated leucocytes using 4-methylumbelliferyl-α-D-gluco-pyranoside as substrate. These techniques were unnecessary with lymphocytes as the deficiency of acid α-glucosidase could be shown directly.