CRIPTO3 and infection: Neutrophils from acetate-treated mice showed enhanced expression of complement receptor CD11b (CR3) and Fc receptor CD16/32 (Fig. 3c) and significantly enhanced oxidative burst after stimulation with the synthetic protein kinase C activator phorbol-12-myristat-13-acetat (PMA) 6 h after infection compared to PBS-treated mice (Fig. 3d).