Figure 2From: Recombinant phospholipase A1 (Ves v 1) from yellow jacket venom for improved diagnosis of hymenoptera venom hypersensitivityEnzymatic activity of rVesv 1. Phospholipase activity assay of rVes v 1 and rVes v 1 S137G/D165A. The recombinant proteins were used at a concentration of 10 μg/ml. Lecithase® ultra at a concentration of 2.5 U/ml was used as a positive control, while the negative control was conducted by omission of protein.Back to article page