Fig. 3. Values of airway resistance (Raw) and inertance (Iaw) and tissue damping (G) and elastance (H) under control conditions (CTRL) and after mivacurium (Miv) or exogenous histamine (Hist) administration in rabbits with no pretreatment (closed symbols ) and in rabbits pretreated with H1 and H2 receptor blockers (open symbols ). *P < 0.05 versus  previous control; #P < 0.05 between protocol groups.