Fig. 2.

Histograms showing the percentages of putatively polyploid nuclei (with multiple hybridization signals) in kidney, pancreas and liver from mice (males and females pooled) at different ages in (a) histological sections and (b) cell spreads. Pancreases were analysed from six mice at each age and kidneys were analysed from three mice at each age. Livers were analysed from three mice at each age, except that only two samples were analysed at 10 days by histological sections and at 30 days by cell spreads.