In wild-type males, EGL-5 expression is initiated in a posterior daughter of the V6 lineage during late L2 (Ferreira et al., 1999). EGL-5 expression continues in the descendants of the ray precursors, R4, R5, and R6, that arise from this cell. The R3 lineage also occasionally expresses EGL-5. In wild-type males the
egl-5::gfp reporter shows similar expression to endogenous EGL-5 in R4, R5, and R6, is rarely expressed in the R3 lineage, and is never expressed in ray precursors anterior to R3.