Additional file 1 of Biological properties and roles of a Trichinella spiralis inorganic pyrophosphatase in molting and developmental process of intestinal larval stages
Additional file 1. Serum anti-rTsPPase IgG titers measured by ELISA with rTsPPase as coating antigen. Forty normal murine serum samples (1:100 dilutions) were measured as negative controls. The cut-off value (0.241) was showed as a dotted line.