Fig. 6. Expression from a wee-1.3 promoter-GFP fusion. Paired GFP fluorescent (A,C,E) and DIC (B,D,F) images. Arrowheads indicate (A,B) sites of GFP expression during early embryogenesis; (C,D) larval distal germline proliferation; (E,F) larval neuronal and hypodermal cells. No fluorescence was observed in adult somatic tissues (not shown).