Figure 3. Vitamin B6 and clomipramine, fluoxetine or venlafaxine effect on the marble burying test (A, B, and C respectively). The number of marbles at least two-thirds buried with sawdust was counted after10, 20, and 30 min. Number of animals in each group was 8. Results are expressed as group mean ± SEM and analyzed by ANOVA followed by Tukey's comparison tests. *P < 0.05, **P < 0.01, and ***P < 0.001 compared with control (N/S). In Fig. C, # P < 0.05 compared with venlafaxine.