2221993 M-current M-type K(+) current 3 2221987 M-current muscarine-sensitive K+ current 2 2221994 M-current M-type potassium current 1 2221995 M-current membrane slow potassium current 1 2221996 M-current motoneurons express a persistent outward potassium current 1 2221988 M-current muscarinic acetylcholine receptor 1 2221989 M-current muscarinic receptors not only suppresses a K+ current 1 2221990 M-current muscarinic-regulated potassium current 1 2221991 M-current muscarinic-sensitive potassium current 1 2221992 M-current muscarinic-sensitive, subthreshold, and noninactivating K+ current 1