To carry this out, SMC from 7 day-infected mice (a time point where the IDO activity has been induced by the infection [17]) were stimulated with F105 or anti-CD3 (to mimic the specific or polyclonal stimulation induced during the infection respectively) in the presence or absence of 20 μM of 3-HK for 1 week. This evidence concerns the gene IDO1 and infection.