Receptors, NotchReceptor, Notch1Receptor, Notch2Membrane ProteinsSignal TransductionBasic Helix-Loop-Helix Transcription FactorsAmyloid Precursor Protein SecretasesIntercellular Signaling Peptides and ProteinsDrosophila ProteinsGene Expression Regulation, DevelopmentalCell DifferentiationPrecursor T-Cell Lymphoblastic Leukemia-LymphomaIntracellular Signaling Peptides and ProteinsReceptors, Cell SurfaceHomeodomain ProteinsDrosophilaWingTranscription Factors