Flies expressing ranScer\UAS.cKa under the control of Scer\GAL4pros.PMG, Scer\GAL4nub.PK, Scer\GAL4h-1J3, Scer\GAL4elav.PLu or Scer\GAL4unspecified show no detectable abnormal phenotype in the CNS. No defects in axonal outgrowth or axon fascicle development are seen during embryogenesis.