"We examined the expression of
tlp-1::gfp in a
lin-44 mutant to determine whether TLP-1 localization might respond to LIN-44 polarity signals. We observed weak GFP expression in the T cell in 8% (n=108) of
lin-44 animals (not shown). Interestingly, we found that
tlp-1::gfp expression is often reversed in
lin-44 mutants, reflecting the reversal in T cell polarity (Fig 6A). Specifically, of the animals in which we observed GFP expression in the T cell lineage (20/86), 60% showed expression in T.a only, 20% showed expression in T.p only, and 20% showed expression in T.a and T.p. These results correlate with the effect of
lin-44 mutations on the T cell division: roughly 70% of the T cell divisions are reversed, 20% are symmetric and 10% are normal (Herman and Horvitz, 1994)."