Hydrolysis of the chromogenic substrate BAPNA by B. jararaca venom, incubated or not with inhibitors of serine proteinase and metalloproteinases.

*Specific activity = 48.3±0.3 nmol p-nitroaniline/min/mg venom (triplicate determinations of two different experiments). †Since o-phe was diluted in ethanol, BjV was incubated with the same volume of vehicle to determine the extent to which BAPNA hydrolysis was inhibited by the solvent. Results are expressed as mean ± s.e.m.