Figure 4.

Immunoreactive BK measured in extracts of fresh citrated blood from healthy donors or HAE patients with C1-INH deficiency incubated at 37°C under mild agitation in the presence of the indicated cellular stimulus, with optional addition of enalaprilat 130 nM (both applied at time zero). Values are means ± S.D. and are all similar to the controls reported in Figure 3. Presentation as in Figure 3.