A different picture was observed for Nos2. At 16 h, no significant induction was found, while at 72 h post-infection, macrophages infected with IMT-202 showed significantly increased expression of Nos2 (about 12 times higher than non-infected macrophages), while IMT-151 and ITMAP-263 did not significantly induce this gene. This evidence concerns the gene NOS2 and infection.