The
tni-2 and
tni-3 genes were also expressed in the same cells of body wall, vulval and anal muscles, but while
tni-2 was uniformly expressed in body wall muscles, the
tni-3 gene was strongly expressed in the head, vulval and anal muscles. Expression of
tni-2::gfp was observed in the vulval and anal muscles in addition to those muscles detected with
tni-2::lacZ. This was the result of the inclusion of a longer 5' upstream region of
tni-2 that includes the NdE-box enhancer for vulval expression.