Fig. 1. Antibacterial activity of the extract of Acer tegmentosum Maxim against Staphylococcus aureus. (A) 2 mg, (B) 1 mg, and (C) 0.5 mg of the extract of Acer tegmentosum Maxim; 100 ng of penicillin G (D). Data are expressed as the mean ± SD (n = 3) of three replicates