IFNG and infection: In addition, blood samples were collected at 2, 6, 24 and 48 h post-infection to analyse the production of inflammatory cytokines such as TNF-α, IFN-γ, IL-6, keratinocyte chemoattractant (KC or CXCL-1, equivalent to human IL-8) and anti-inflammatory cytokine IL-10 (see electronic supplementary material, figure S9).