MAPK8 and infection: To investigate the signalling pathways that could contribute to the differential cytokine response of A-498 to wt and Cgyps1-11Δ infection, we checked the activation status of three serine-threonine MAP kinases, extracellular signal-regulated kinase (ERK), stress-activated protein kinases c-Jun N-terminal kinase (JNK) and p38 kinase.