“route with … doses of glibenclamide (an ATP-sensitive K(+) channels blocker, 0.5pg/site), charybdotoxin (a large- and intermediate-conductance calcium-activated K(+) channel blocker, 25pg/site) or apamin (a small-conductance calcium-activated K(+) channel blocker, 10pg/site), augmented the effect of folic acid (10mg/kg, p.o.,”