Interestingly, at the first week post-infection all the FFPE lung tissue samples from infected mice were positive for all three protocols tested, with number of detected copies ranging from 21 to 1051 (Fig 4B), whereas in the second week post-infection only two samples were positive for the 100-kDa protein (with 2 and 4 copies detected), one for the H antigen (1 copy detected) and none for the M antigen protocol (Fig 4B). The gene discussed is FUT1; the disease is infection.