The P{GawB} element of the P{GawB}tshmd621 insertion (in the 5'UTR of tsh) has been replaced by a P{UpP65L} enhancer trap element (encodes a lexA::p65 driver).
The P{GawB} element inserted in the 5'UTR of tsh in an enhancer trap line has been replaced with a P{lexA} enhancer trap construct.