Sequence DeletionMolecular Sequence DataBase SequenceGene DeletionChromosome DeletionMutationAmino Acid SequencePhenotypeChromosome MappingDNA Mutational AnalysisPlasmidsPolymerase Chain ReactionClonal DeletionExonsCloning, MolecularMice, KnockoutMedlinePlus22q11 Deletion SyndromeDiGeorge SyndromeChromosomes, Human, Pair 22Syndrome