Fig. 6. Effect of BHT on lipid oxidation levels, (A) at different stages of the blastogenic cycle of control B. schlosseri colonies; (B) in BHT (6 mg l^-1)-treated, ethanol-treated and control ramets at blastogenic stage D. Lipid oxidation was determined as MDA using the HPLC based Thiobarbituric acid test (see Materials and methods for details). The MDA levels were standardized to 10 µg protein. n, ramets number. Data are mean ± S.D. N values are given above each bar.