text:  colon_PPARa-/-_heme_repl2 colon, PPARα knockout mouse, after 14 days on a Westernized high fat diet supplemented with heme (0.5 µmol heme/g diet), replicate 2 strain: 129S4/SvJae-Pparatm1Gonz/J; genotype/variation: PPARa knockout; gender: male; age: 7-9 weeks; tissue: colon; diet: heme