Fig. 5. Influence of GM on Mϕ. (A) RAW264 were incubated with CM containing various concentrations of GM for 48 h, and the morphological changes were observed under phase contrast microscope. Representative data from two independent experiments are shown. (B) RAW264 were incubated with CM containing various concentrations of GM for 48 h, and their viabilities were enumerated via trypan blue exclusion test. Data are presented as mean±SD of two independent experiments. ^*p<0.05: 0 vs. 100 or 500. N.D., not detectable; GM, gentamicin; CM, complete medium; Mϕ, macrophages.