Fig. 9. Effect of Hcy on homocysteine (HAT) and histone deacetylase (HDAC) levels in cultured monocytes. Levels of HAT and HDAC in supernatant of cultured monocytes were measured by ELISA assays after incubation with 100 µmol l^–1 Hcy for the indicated times. Data are expressed as mean ± s.e.m. and were representative of at least 6 independent experiments. ^*P<0.05 compared with corresponding untreated groups.