IFNGR1 and infection: In the SBP infection, peak parasitaemia increased only approximately 2-fold in the absence of IFNγR signalling (p < 0.0001) as described previously (Brugat et al., 2014; Kim et al., 2012; Meding et al., 1990; Stevenson et al., 1990; Su and Stevenson, 2000; van der Heyde et al., 1997).