Table 1

EC₅₀ and E_max values for contraction induced by LTD₄, U46619 and carbachol on isolated guinea pig tracheae

	EC₅₀(nM)	E_max (g)	Conc. (M) at max
LTD₄	1.84 ± 0.42	2.37 ± 0.15	1 × 10⁻⁷
U46619	5.52 ± 1.20	2.30 ± 0.23	3 × 10⁻⁷
Carbachol	59.60 ± 5.74	2.67 ± 0.20	1 × 10⁻⁵

Values are the mean ± S.E.M. of five experiments.