abinofuranoside 1620 h after plating. Cultures were controlled for neuron health and morphology as well as for glial content. Total RNA was extracted using the ABI Prism 6100 Nucleic Acid PrepStation from cerebella and PerfectPure RNA Cultured Cell kit treated total RNA was reverse transcribed to cDNA and quantified by qPCR on the ABI Prism 7000 Sequence Detection System using TaqmanH Gene Expression Assays, Mm01227754_m1, and GABAA receptor a6, Mm01266203_g1) with TaqmanH PCR master mix. TATA-box binding protein was used as an endogenous control. All reactions were prepared in duplicate and three separate runs were prepared for each sample. The mean expression 
level of samples was compared to mean expression level of control mice and calculated as FC of the Gene Expression Alterations in Cstb2/2 Mouse controls. The data were calculated by standard-curve method with DataAssist software Version 3.01 and Student’s t-test with p,0.05 considered as statistically significant. Western blot analyses Cerebella of P7 and P30 Cstb2/2 and control mice were lysed with 50 mM Tris, 0.5% Nonidet P40, 10% glycerol, 0.1 mM EDTA, 250 mM NaCl, 0.1 mM Na3VO4, 50 mM NaF, 4 mM dithiothreitol, 16 Protein inhibitor cocktail using Lysing Matrix D tubes and FastPrepH FP120 Instrument. Lysed proteins were separated with Protean TGX precast gels and transferred on the nitrocellulose membrane. The primary antibodies used were rabbit anti-rat GABRA6 and mouse anti-rat b-tubulin , and the secondary antibodies used were antirabbit-IRDye 800CW and anti-mouse-Alexa Fluor 680 . The bands were detected with Odyssey infrared reader. Signal intensities were detected with Image Studio 3.1 and normalized to the intensity of b-tubulin. Electrophysiology Brains from P7 Cstb2/2 and control mice were dissected in ice-cold 124 mM NaCl, 3 mM KCl, 1.25 mM NaH2PO4, 10 mM MgSO4, 26 mM NaHCO3, 1015 mM D-glucose, 1 mM CaCl2, BQ 123 site saturated with 5% CO2/ 95% O2. Cerebellar slices were cut horizontally with a vibratome in the above solution and stored at room temperature in 124 mM NaCl, 3 mM KCl, 1.25 mM NaH2PO4, 4 mM MgSO4, 26 mM NaHCO3, 1015 mM D-glucose, 1 mM CaCl2, saturated with 5% CO2/ 95% O2. The slices were used 14 h after cutting. For electrophysiological recordings the slices were placed in a submerged chamber and superfused with artificial cerebrospinal fluid: 124 mM NaCl, 3 mM KCl, 1.25 mM NaH2PO4, 1 mM MgSO4, 26 mM NaHCO3, 15 mM D-glucose, 2 mM CaCl2, saturated with 5% CO2/95% O2, at a rate of 23 PubMed ID:http://www.ncbi.nlm.nih.gov/pubmed/19639654 ml/min. Whole-cell recordings were obtained from Purkinje cells using the Multiclamp 700B amplifier. Cells were voltage-clamped at 0 mV with 45 MV pipettes filled with 135 mM CsMeSO4, 10 mM Hepes, 0.5 mM EGTA, 4 mM Mg-ATP, 0.3 mM Na-GTP and 2 mM NaCl, pH 7.2. At 0 mV GABAergic currents were seen as outward and glutamatergic currents as inward. Recordings where access resistance was higher than 25 MV were discarded. Axoscope 10.2 was used for data acquisition. Offline analysis was done using MiniAnalysis 6.0.7 program. Spontaneous events were detected using peak detector algorithm, and all events were confirmed visually. The chi-square test and two-tailed Student’s t-test were used PubMed ID:http://www.ncbi.nlm.nih.gov/pubmed/19637192 for statistical analysis with p,0.05 considered as statistically significant. or intracardially perfusion fixed with 4% paraformaldehyde. Brains were dissected and postfixed with 4% paraformaldehyde for one week. Paraffin sections were dewaxed with xylene and descending series of alcohol. Antigen retrieval was pe
