UASt regulatory sequences drive expression of an inverted repeat.
embryonic/larval heart, with Scer\GAL4HCH.Hand
embryonic cardioblast, with Scer\GAL4HCH.Hand
larval ostial pore, with Scer\GAL4HCH.Hand
Expressing Wnt4KK102348 under the control of Scer\GAL4HCH.Hand results in disrupted cardiac morphogenesis and loss of ostia.