Figure 1. Expression of Gas in C. elegans, The expression pattern of g s a - 1 was analyzed using G F P gene fusions. ( A } Head region. Expression of
gsa-1 in the pharyngeal and body-wall muscle cells and in the nerve ring neuropil is shown. Note that this picture does not show the full extent of
gsa-1 expression in the head ganglia to better visualize t h e p h a r y n g e a l m u s c l e cells. ( B ) Region surrounding the vulva, g s a - 1 is expressed in the ventral nerve cord and the vulva and uterine muscle cells. ICI Tail region. Expression of
gsa-1 in the ven- tral nerve cord and in the tail ganglia is shown. (D) Expression of a translational
gsa-1::GFP fusion in body-wall muscle cells results in a punctate expression pattern that may represent localization in dense bodies. The fusion protein contains half of the Gas amino-terminal sequence and may direct localization to these structures. IF) Expression of
gsa-1 in the CANs, the HSNs, and the posterior lateral ganglion Ipl. IFI Expression of
gsa-1 in one process of the H-shaped excretory cell (eel is shown.