Effect of menthol and paxilline or TEA, alone or in combination, on migration of human glioblastoma cells as determined by rate of closure of 'scratch-wounds' made in confluent cell cultures. A. Effect of paxilline (2 μM); B. Effect of TEA (10 mM). *Differs from control, p < 0.001; **Differs from menthol, p < 0.001. Each point = Mean ± SE, n = 3.