LGALS4 and Bloom syndrome: We also observed BS paralysis in flies with kcc-RNAi-B driven with nrv2-GAL4 (cortex and neuropile glia, 88% BS paralysis), mz709-GAL4 (ensheathing glia, 60% BS paralysis) and alrm-GAL4 (astrocyte-like glia, 22% BS paralysis) (Fig. 2A).