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A: A wild-type first instar larval cuticle is shown as well as a magnified view of the denticles from the fourth abdominal segment (A4). B–E: Larval cuticles from dsc73 mutant larvae have a completely normal pattern of denticles and hairs, and the A4 denticles appear morphologically normal. F: Larval cuticles from the viable dsc73 excision allele are also normal.
