highly significantP <0.001
The increase in bouton number was highly significant in both dGALT -null conditions ( dGALT : 39.4±2.7, n =14, P <0.001; dGALT /Df: 42.5±2.3, n =17, P <0.001) compared with controls (28.1±1.5, n =32), as well as in the ubiquitous dGALT RNAi-knockdown condition ( UH1 -driven: 36.7±1.4, n =20, P <0.0001) compared with controls (26.6 ±1.9, n =13; Fig. 1D ).