Administration of low-dose endotoxin to healthy humans increases C5a binding to circulating neutrophils.
Granowitz EV, Porat R, Gelfand JA, Wolff SM, Dinarello CA. Administration of low-dose endotoxin to healthy humans increases C5a binding to circulating neutrophils. J Infect Dis. 1994 Feb; 169(2):480-2.