In order to address the immune response to the infection with C. diphtheriae in BMM, Clec4e- and Myd88-deficient cells, the supernatants were collected at 2, 4 and 20 h post-infection for determination of cytokine secretion, such as G-CSF (Figure 1(c)) and IL-6 (Figure 1(d)), respectively. This evidence concerns the gene IL6 and infection.