Left: growth curves in the presence of different concentrations of compounds. Treatments with (A) Memantine (MM), (B) MK-801, (C) Amantadine (AMT); at 28°C and 7.4 pH: black square: 0 µM; black up-pointing triangle: 30 µM (MM or AMT), 100 µM (MK); black down-pointing triangle: 60 µM (MM), 90 µM (AMT), 200 µM (MK); black left-pointing triangle: 90 µM (MM), 150 µM (AMT), 300 µM (MK); black right-pointing triangle: 120 µM (MM), 250 µM (AMT), 400 µM (MK); black diamond: 150 µM (MM), 400 µM (AMT), 500 µM (MK); black pentagon: 180 µM (MM), 500 µM (AMT), 600 µM (MK); black hexagon: 210 µM (MM), 700 µM (AMT or MK); black star: 250 µM (MM), 1,000 µM (AMT), 800 µM (MK); inverse white circle: 300 µM (MM), 1 mM (MK); black circle: Inhibition control (0.5 µM antimycin and 60 µM rotenone). Right: dose-response curves.