An Inotropic Action Caused by Muscarinic Receptor Subtype 3 in Canine Cardiac Purkinje Fibers

Table 1

Amount of gene expression of mAChR subtypes in Purkinje fibers.

	M1	M2	M3
Purkinje fiber	<6.0 × 10^−4	1.6×10^−1±8.5×10^−3	1.5×10^−3±1.2×10^−4
Salivary gland	5.1×10^−2±2.3×10^−2	3.9×10^−3±1.6×10^−3	1.5×10^−2±6.3×10^−3
Atrial muscle	<4.4 × 10^−4	2.1×10^−1±1.1×10^−2	8.6×10^−4±4.1×10^−4