Fig. 3.
Cisplatin sensitivity and apoptosis in Mlh1G67R/G67R MEF cells. MEF strains of the various Mlh1 genotypes were exposed to cisplatin for different time periods or at varying concentrations. (a) Survival of cells after exposure with 40 μM cisplatin at different time intervals. (b) Survival of cells after 48-h exposure at different cisplatin concentrations. (c) Apoptotic response to cisplatin treatment (20 μM cisplatin for 24 h) measured by TUNEL. (d) G2/M cell-cycle arrest in Mlh1G67R/G67R MEF cells. The percentage of cells in G0/G1 and G2/M were calculated for three different MEF strains for indicated genotypes. The results are shown as the fold increase of G2/M cells in treated over untreated MEFs for each genotype.