Fig. 4

Extracellular and intracellular catecholamine levels after selective MAO-A or MAO-B inhibition. a, b Extracellular (a) and intracellular (b) catecholamine levels after 24-hour inhibition of MAO-A with clorgyline (CLG, 1 μM). c, d Extracellular (c) and intracellular (d) catecholamine levels after 24-hour inhibition of MAO-B with lazabemide hydrochloride (LB, 10 μM). (n = 4–6) * p < 0.05, for comparisons between inhibitor treated and untreated groups by MANN-Whitney U test