DPT and infection: Several genes upregulated in both obesogenic diet groups (Dpt, PGRP-SC2, and Pebp1) have functions relating to immunity or response to infection (Bischoff et al. 2006; Lemaitre et al. 1997; Wicker et al. 1990; Cronin et al. 2009; Reumer et al. 2009).