Major tissues of expression for sft-4. Fluorescence micrographs of an adult hermaphrodite carrying a transcriptional fusion between gfp and a putative promoter of sft-4 expressed in (A) pharyngeal muscle, (C) vulva and (E) intestinal nuclei (i). The intestine shows some unspecific autofluorescence, but there is also specific expression in the intestinal nuclei. Expression in body wall muscle, hypodermis and neurons is not shown. (B, D, and F) Corresponding DIC images. Scale bars, 20 μm.