Figure 1. Effect of Tityus sp. venom (VTsp) on the cell viability of peripheral blood mononuclear cells (PBMC), that were stimulated with PHA (Phytohemagglutinin), and exposed to the VTsp in a 72h culture, using the resazurin fluorimetric assay (AlamarBlue). Negative control: Triton 1x; positive control: untreated cells. Results were expressed as the standard error of the mean (± SEM). Significance values p < 0.05* and p < 0.01**.