trhS665A.Scer\UAS.T:Zzzz\FLAG; Scer\GAL4arm.PS embryos do not form ectopic tracheal primordia (placodes).
Scer\GAL4arm.PS/trhS665A.UAS.Tag:FLAG fails to rescue trh2
tracheal primordia development in trh2 homozygotes is not rescued by trhS665A.Scer\UAS.T:Zzzz\FLAG; Scer\GAL4arm.PS.