UASt regulatory sequences drive expression of the full length Npc2b cDNA.
Expression of Npc2bScer\UAS.cHa under the control of Scer\GAL4tub or Scer\GAL42-286 rescues the lethality seen in Npc2aunspecified ; Npc2bunspecified double homozygotes, such that 83% or 86% respectively of the double mutants survive to adulthood.