raEx438 [pxl-1p::pxl-1a(cDNA)::GFP + rol-6(su1086)]. Rollers. Transgene does not rescue ok1483 L1 lethality. Transgenic (Rol) heterozygotes segregate rolling non-Dpy (heterozygotes carrying raEx438), non-rolling non-Dpy (heterozygotes without the array), arrested L1 (ok1483 homozygotes) and sterlie Dpy (mT1 homozygotes). Pick rolling non-Dpy and check for correct segregation of progeny to maintain. Reference: Warner A, et al. Mol Biol Cell. 2011 Jul 15;22(14):2551-63.