MPPE1 and infection: Since then, the specific requirement for cDC1 in cross‐priming CD8 T cells has been confirmed in viral (Hildner et al, 2008; Helft et al, 2012), bacterial (Yamazaki et al, 2013), and parasite (Mashayekhi et al, 2011; Piva et al, 2012; Lau et al, 2014; Radtke et al, 2015a) infections.