highly significantp < 0.0001
For the WAY 100635 experiment, a two-way ANOVA (age × treatment) showed highly significant differences among the ages ( F 1, 52 = 95.91, p < 0.0001), treatment ( F 3, 52 = 30.49, p < 0.0001), and age × treatment interaction ( F 3, 52 = 8.202, p = 0.0001; Fig. 4 a).