TG hydrolase activities of white adipose tissue (WAT). Triglyceride (TG) hydrolase activities were determined in adipose tissue from (A) 24-h fasted 10-week-old male WT mice in the presence or absence of the specific inhibitor of adipose triglyceride lipase (ATGL), Atglistatin (40 μM) and/or the specific inhibitor of HSL, Bay (50 nM). (n = 6) (B) from 24-h fasted 10-week-old male WT mice, adipose ATGL-deficient (ATGLAKO) mice, adipose HSL-deficient (HSLAKO) mice, and adipose ATGL and HSL double deficient (DAKO) mice. Tri[9,10 (n)-3H]triolein was used as the substrate (n = 6 mice). Values are mean ± S.E.M. * p < 0.05, ** p < 0.01, *** p < 0.001.