AAV Synapsin-DIO-GFP (30 µl)

GFP is a green monomer which matures extremely bright, making it possible to see results very soon after activating transcription. It is highly photostable and resistant to photobleaching. In the DIO scenario, the transgene of interest is inserted in reverse orientation relative to the 5' promoter and is flanked by oppositely oriented loxP and lox2272 sites. In the absence of Cre expression, the transgene will not be produced. In the presence of Cre expression, the transgene will be "Flip-exchanged" or FLEXed, leading to the expression of the transgene. This is due to a permanent Cre-mediated recombination/inversion of the flanked transgene. This arrangement is called DIO (double-floxed inverse ORF), Cre-ON, Flex-rev (reverse), Flex-ON/FlexON, or DIO-AAV/AAV-DIO (double-floxed inverse ORF in AAV).