wpEx76 [myo-3p::tom20::tdKillerRed + unc-122p::GFP]. Pick GFP+ to maintain. KillerRed is a red fluorescent protein and photosensitizer that efficiently generates reactive oxygen species (ROS) when activated by light. wpEx76 carries a tandem dimer version of KillerRed targeted to the mitochondria by the addition of a tom-20 targeting sequence (mito-tdKillerRed). Reference: Williams DC, et al. Cell Rep. 2013 Oct 31;5(2):553-63.