Representative images of adult females wings in combinations of Dl∆β1-2 with loss of function Delta alleles. In combinations with Dlrev10 (A), Dl∆Exon2 (B), or Df(3R)DlFx3 (C), vein thickening is strongly enhanced (right panels) compared to heterozygous mutants alone (left panels). Vertical square brackets indicate the regions used for vein thickness quantification. Quantification of wing-vein thickness in females of the indicated genotypes. Representative images of adult female wings demonstrate that Dl∆β1-2 rescues the wing notching phenotype, caused by a Notch loss of function allele (N55e11). Horizontal square bracket indicates the L5 vein "delta" at the intersection with the wing margin analyzed in EV2E. Quantification of wing notching in females of the indicated genotypes, Dl∆β1-2 rescues notching in a similar manner to Dlrev10. 