(I and J) Injection of translational construct of
exc-1::gfp shows expression concentrated near the apical surface near the canal lumen, and shortens canal length, with normal-diameter folded lumen apparent at terminal end of posterior canal. J is the same as I, sharpened and contrast enhanced to show regions of strongest expression. In E-J, arrowheads show normal-diameter tubule; narrow arrows indicate fluid-filled cysts; hollow arrows indicate amphid sheaths. Bars, 10 um