An αTub84B promoter drives expression of a fusion protein that comprises the Ecol\lexA DNA-binding domain fused to the esc coding region.
wild-type
esclexA.αTub84B rescues esc10/esc2
esclexA.αTub84B rescues esc6
escαTub84B.T:Ecol\lexA rescues the lethality seen in esc10/esc2 or esc6 animals.