
Frequencies of chromatin gaps (G) and double-strand breaks (DB) at different APC concentrations in (B) BALB/c and (C) C57BL/6 mouse splenocytes. The y-axis shows the mean numbers of G and DB per metaphase; for each strain and APC concentration, means ± standard errors were calculated from counts in 125 metaphases (five mice). Statistically significant differences (Mann- Whitney U-test, P < 0.05) between strains are indicated with asterisks (*). The numbers of induced G and DB are slightly higher in BALB/c compared to C57BL/6 cells.











