UAS regulatory sequences drive expression of the 'iCasper2.0' sensor (an infra-red reporter of caspase activity). iCasper2.0 is identical to the iCasper sensor (see FBrf0227896), except that amino acids in the infra-red fluorescent protein core of the sensor have been changed to increase the brightness of fluorescence. In addition to showing caspase-dependent infra-red fluorescence, iCasper2.0 also display constitutive green fluorescence, due to the presence of two complementary split-GFP coding sequences that flank the infra-red fluorescent protein core of the sensor (these sequences also keep the IFP core intact after cleavage). The PBac{UAS-iCasper2.0-T2A-HO1} construct also produces the Hsap\HMOX1 protein, which is required to generate the biliverdin (BV) cofactor that the iCasper2.0 infra-red fluorescent protein core requires to fluoresce.