EXC-9 expression pattern outside the excretory canals. (a–a’’). EXC-9 shows expression in the uterine seam cell. (b–d’’) Anterior and posterior gonadal distal tip cells (b–c’’) within the lumbar ganglion (d–d’’). For each set of micrographs, the top image shows fluorescence, the middle micrograph shows the DIC image, and bottom image is merged.