b, c) Quantification of b) neutrophil infiltrates (NIMP positive) and c) mean number of TAF positive hepatocytes in liver of young (3 months) and old (24 months) mice. Data are mean±S.E.M. of 3-5 mice per group ; d) Quantification of mean number of TAF in hepatocytes as a function of the distance from a Ly6G labelled neutrophil. Data are from 5 mice aged 29 months of age, line indicates linear relationship between mean TAF and distance (linear regression and F test: R2=0.35; P<0.0001); 