Fig. 6. The loss of PCV in tlr mutants is rescued by reducing endogenous Sog levels or by overexpressing Tlr, but not by overexpressing Tld. (A) sog heteroallelic combinations of the indicated genotype restores the PCV structure in tlr mutant animals. (B) Overexpression of UAS-tlr(2) with da>Gal4 driver rescues Bmp signaling in the PCV of developing tlr mutant pupal wings, as well as the PCV in the adult wings. (C) Overexpression of UAS-tld(16) with da>Gal4 driver does not rescue the PCV in the tlr mutant escapers.