Fig. 5From: Hematobin is a novel immunomodulatory protein from the saliva of the horn fly Haematobia irritans that inhibits the inflammatory response in murine macrophagesHTB downmodulates CD40 expression by activated macrophages and does not induce cell death. Macrophages were pre-incubated overnight with HTB (1000 nM) and stimulated with LPS plus IFN-γ (10 ng/ml of each). Flow cytometry was employed to evaluate the CD40+ events in F4/80+ gated cells after 24 h (a); and annexin V+ events in F4/80+ gated cells after 2 h and 18 h (b). The data are expressed as the percentage of positive events for each markerBack to article page