Effects of P. berghei infection on haemoxygenase-1 mRNA expression in the liver of DBA-2 mice. Expression of HO-1 mRNA in the liver of DBA-2 mice infected with P.berghei (ANKA), when parasitaemia rates rose to levels >30%PE on PID20, and respective non-infected controls. Column height represents mean ± S.E.M. for relative levels of mRNA of 6 mice. Differences (Mann-Whitney U test, P < 0.05) between infected (malaria) and non-infected controls (Ctrl) are indicated by an asterisk (*). Quantification of mRNA was by real time RT-PCR.