Fig. 2. Intracellular ATP concentration in (GSHþ) cells and (GSH) cells during normal growth process (A) and cold treatment at 20 C (B). The initial cell concentration of (GSHþ)
cells and (GSH) cells was 7.8 108 cfu/ml and 7.5 108 cfu/ml, respectively. Error bars indicate standard deviations (n ¼ 3). Statistically significant differences (p < 0.05) were
determined by Student’s t-test and are indicated with asterisks.