Fig. 6From: Characterization of a serine protease inhibitor from Trichinella spiralis and its participation in larval invasion of host’s intestinal epithelial cellsCellular localization of rTsSPI binding to IEC by confocal microscopy (× 1000). The IEC was pre-incubated by rTsSPI, and then by anti-rTsSPI serum, infection serum or pre-immune serum, and stained using anti-mouse IgG-FITC conjugate. Propidium iodide (PI) dyed cell nuclei in red. Abbreviations: FITC, fluorescein isothiocyanate; PI, propidium iodideBack to article page