P-values for filopodium, thin spine, mushroom spine, and stubby spine densities presented in Table I
| Description | Filopodium | Thin spine | Mushroom spine | Stubby spine |
| Cdc42 GDP | 0.453 | <0.001 | 0.015 | 0.352 |
| 0.016a | 0.632a | 0.008a | 0.010a | |
| Cdc42 GTP | 0.048 | <0.001 | 0.614 | <0.001 |
| Inactive Rif | 0.084 | <0.001 | 0.105 | <0.001 |
| p34 siRNA | 0.577 | <0.001 | 0.025 | 0.673 |
| cof1 siRNA | 0.940 | <0.001 | 0.522 | 0.379 |
| cof1 siRNA + cof1-myc | 0.533 | 0.105 | 0.480 | 0.233 |
| 0.533b | <0.001b | 0.901b | 0.515b | |
| Active Rif | 0.732 | 0.074 | 0.210 | 0.413 |
| mDia2 siRNA | 0.074 | 0.002 | 0.626 | 0.018 |
| Inactive Rif + active mDia2 | 0.204 | <0.001 | 0.050 | 0.208 |
| Inactive Rif + WA | 0.522 | <0.001 | <0.001 | 0.008 |
| WA | 0.458 | <0.001 | <0.001 | <0.001 |
| Description | Filopodium | Thin spine | Mushroom spine | Stubby spine |
| Cdc42 GDP | 0.453 | <0.001 | 0.015 | 0.352 |
| 0.016a | 0.632a | 0.008a | 0.010a | |
| Cdc42 GTP | 0.048 | <0.001 | 0.614 | <0.001 |
| Inactive Rif | 0.084 | <0.001 | 0.105 | <0.001 |
| p34 siRNA | 0.577 | <0.001 | 0.025 | 0.673 |
| cof1 siRNA | 0.940 | <0.001 | 0.522 | 0.379 |
| cof1 siRNA + cof1-myc | 0.533 | 0.105 | 0.480 | 0.233 |
| 0.533b | <0.001b | 0.901b | 0.515b | |
| Active Rif | 0.732 | 0.074 | 0.210 | 0.413 |
| mDia2 siRNA | 0.074 | 0.002 | 0.626 | 0.018 |
| Inactive Rif + active mDia2 | 0.204 | <0.001 | 0.050 | 0.208 |
| Inactive Rif + WA | 0.522 | <0.001 | <0.001 | 0.008 |
| WA | 0.458 | <0.001 | <0.001 | <0.001 |