Fig. 2. Growth of esg-M⁺ discs in M(3)67C/+ larvae. (A,B) Six-day M(3)67C/+ and esg-M⁺ wing discs. The discs are triply stained for GFP, wingless (red) and PH3 (blue). The green label in the disc in B corresponds to the adepithelial cells. The pictures are taken at the same magnification. The disc in B is bigger. (C) Comparison of the size of the adult wings of M(3)67C/+, wild-type and esg-M⁺ flies. There are no significant differences. (D-F) Wing discs from prepupal larvae of the same genotypes as in C, stained for GFP, PH3 and wg. All the discs are of the same size.