Fig. 3: LukAB RARPR-33 toxoid compared to LukAB CC8Δ10C toxoid.

A LukAB shows highest toxicity at the lowest concentrations among leukocidins produced by S. aureus.B Lower in vitro cytotoxicity of LukAB RARPR-33 than prototype LukAB CC8Δ10C. CC clonal complex, Hlg gamma-hemolysin locus, LukAB leukocidin AB, LukED leukocidin ED, PVL Panton-Valentine leukocidin, PMN polymorphonuclear cells, WT wild-type.