“… tetraethylammonium (TEA, a non-specific blocker of K⁺ channels, 25 pg/site), glibenclamide (an ATP-sensitive K⁺ channel blocker, 0.5 pg/site), charybdotoxin (… small-conductance calcium-activated K⁺ channel blocker, 10 pg/site) was able to produce a synergistic effect with a sub-effective dose of ascorbic acid (….).”