The AID leads to tissue-specific degradation. Confocal detection of AID-GFP expressed in all tissues by the ubiquitous promoter Peft-3 from animals grown on regular NGM plates (control; left panels) or auxin plates (right panels). Tissue-specific degradation was achieved by coexpressing Peft-3::AID-GFP and Peft-3::tir-1-bfp (ubiquitous), Pdpy-7::tir-1-bfp (epidermis), Pmyo-3::tir-1-bfp (body-wall muscles), or Prab-3::tir-1-bfp (neurons). Arrowheads indicate the position of the nerve ring. Scale bars, 10 µm.