juIs319 [col-19p::GCaMP3 + col-19p::tdTomato]. col-19p::GCaMP3 expression is induced by either laser or needle wounding. col-19 is an adult-specific collagen and is not expressed until the end of the L4 larval stage. Reference: Xu S & Chisholm AD. Curr Biol. 2011 Dec 6;21(23):1960-7.