4 aminobutyric acid A receptor Animals Animals, Newborn Bifid uvula Cleft Palate Cleft palate Cytoskeletal Proteins DiGeorge syndrome Gabrb3 protein, mouse Gene Deletion Gene Expression Humans Mice Mice, Knockout Microarray Analysis Muscle Proteins Palate Phenotype Real-Time Polymerase Chain Reaction Receptors, GABA-A Soft palate T box transcription factor T-Box Domain Proteins Tbx1 Tbx1 protein, mouse Velocardiofacial syndrome animal cleft palate cytoskeleton protein embryology