To explore whether a similar mtROS-dependent bactericidal mechanism was operating between EG neutrophils and those within Tg(Runx1:cebpb-CG2;lyz:DsRed2) larvae, we first investigated the expression of selected mitochondrial respiratory complex subunits and assembly factors that our RNA-seq analysis uncovered were elevated in EG neutrophils following infection. The gene discussed is CEBPB; the disease is infection.