In adults, expressed in the bar-shaped type II cells of anterior tubule initial and transitional segments of the Malpighian tubules; not expressed in the stellate type II cells of the main segment. Marks an "upper ureter" domain from the tubule bifurcation to halfway along the ureter of the Malpighian tubules.
Expressed only in the bar-shaped Type II cells, not the stellate Type II cells of the Malpighian tubule. Expressed in the "upper ureter domain" from the tubule bifurcation to halfway along the ureter.