A, tissue distribution of BCG hydrolase and NAAG hydrolase activities in mouse. BCG hydrolase and NAAG hydrolase activities were measured in the presence of 120 mm NaCl, 2.5 mm CaCl2, 1 mm MgCl2, and 5 μm substrate. Error bars, S.D. of two independent experiments. B, RT-QPCR distribution of GCP2 and GCP3 (mean of duplicates from three different animals).