Cloned by Tom Carroll in Peter Vize's laboratory. Expressed in the presumptive pronephros and presumptive otic vesicle from late gastrula stages onwards. Anterior is to the right and dorsal up in all panels.
Pronephric expression is indicated with a black arrow, and otic expression with a red arrow.
Transient expression in the duct is indicated with a white arrow. A. Late gastrula, approx. Early neurula, approx. Developmental Biology 214, in press.