Figure 1

Effect of dexamethasone on the bystander effect. (A) The viability of C6 cells mixed with 10 % (left) or 5 % (right) of C6-TK cells and treated with ganciclovir (2 μM) for 5 days is shown in the presence (+) or absence (-) of dexamethasone (1 μM, DEX). (B) Viability of LN18 cells mixed with 20 % LN18-TK cells and grown for 5 days with ganciclovir (10 μM) in the presence (+) or absence (-) of DEX. (C) Viability of U87 cells mixed with 10 % U87-TK cells and grown for 5 days with ganciclovir (10 μM) in the presence (+) or absence (-) of DEX. For each condition, the viability in the absence of ganciclovir was set as 100 percents. (*: P < 0.05, Student's t-test)