Figure 3. Expression of the
aex-1::gfp Fusion Gene. (A) Anterior intestine. Only the two front anterior intestinal cells emitted GFP fluorescence. DIC is a Nomarski-optics image.(B) Posterior intestine.(C) Head ganglia. Four neurons (identity unknown) are GFP-fluorescent. These cells became fluorescent after the late adult stage.(D) Body-wall muscle cells at the head region (arrow). Muscle GFP fluorescence is much weaker than intestinal fluorescence and is not visible in (A) and (B).