C/ebpβ is required during emergency granulopoiesis as deficient mice could not mobilise a response to systemic fungal infection or cytokine stimulation, even though steady state granulopoiesis remained unaltered (Zhang et al., 2002; Hirai et al., 2006; Screpanti et al., 1995; Tanaka et al., 1995). Here, CEBPB is linked to fungal infectious disease.