CD68 and coronary artery disorder: GGT may be associated with poor prognoses in CHD patients by the followingmechanisms: (1) GGT was found in carotid atherosclerotic plaques after carotidendarterectomy [33], and a histochemical analysis showed that GGT was active andexpressed in CD68+ macrophage-derived foam cells in human atherosclerotic plaques[34].