The last 143 amino acids of hbs have been removed.
visceral trunk mesoderm, with Scer\GAL4Mef2.PR, Scer\GAL4twi.PB
When hbsΔECD.Scer\UAS is driven by Scer\GAL4twi.PB and Scer\GAL4Mef2.PR simultaneously in the embryo no defects are seen in somatic muscle development, but visceral muscle development is blocked.