Fig. 4.

Postembryonic blast cells show selective differentiation defects in sox-2 mutants. (A) Expression summary of reporter genes expressed in rectal epithelial cells. (B) Scheme of rectal epithelial blast cells at the L1 stage, previously shown to express sem-4, egl-5 and ceh-6. sox-2 is also expressed in these cells (Fig. 3A). (C) Rectal epithelial cells show selective differentiation defects in sox-2 mutants. Reporter genes were crossed into sox-2(ot640) null mutants and animals were examined at the first larval stage. Representative images are shown; n>20. (D) Seam cell identity is unaffected in sox-2 mutants. Reporter genes were crossed into sox-2(ot640) null mutants and animals were examined at the first larval stage. Asterisk marks the Q neuroblast. Representative images are shown; n>20.