The method of qualitative and quantitative analysis and localization of cytochemistry were used to observe the epithelial cells of the thin-white coating of tongue from 25 patients with Deficiency Cold Syndrome (DCS) and 20 normal persons. Results showed that the level of intracellular DNA, PAS of the epithelial cells in the DCS group were markedly enhanced, while the activities of succinate dehydrogenase (SDH) and acid alpha-naphthyl acetate esterase (ANAE) were reduced significantly compared...