These subpopulations found in clpV mutant-infected mice are PD-L1-, and indeed there was higher number of PDL-1- neutrophils in clpV mutant-infected mice compared to Kp52145-infected mice, particularly at 48 h post infection (p<0.05, between results in clpV mutant-infected mice and Kp52145-infected mice; one-way ANOVA) (Fig 2E). Here, CD274 is linked to infection.