Figure 1: Effects of P. acidus (PA) and R. nasuthus (RN) extracts on cell viability in NHEM. (A) PA at 3.125-100.000 μg/mL or (B) RN at 3.125-100.000 μg/mL. Percentage values of cells treated with PA and RN extracts are expressed as relative values (%) to control cells. Data are shown as the mean±SEM from three independent experiments. *P<0.05, **P<0.01 compared with α-MSH treated cells.