Zataria multiflora Boiss and Carvacrol Affect β₂-Adrenoceptors of Guinea Pig Trachea

Figure 2

Cumulative log concentration-response curves of isoprenaline-induced relaxation of guinea pig tracheal chains, in the presence of saline, three concentrations of aqueous-ethanolic extract, three concentrations of carvacrol, and 10 nM propranolol in nonincubated trachea ((a) and (b): 𝑛=8) and incubated tissues with chlorpheniramine ((c) and (d): 𝑛=5).

(a)

(b)

(c)

(d)