psa-3 was expressed in the T cell, head neurons, posterior gut cells, hypodermal cells (
hyp7,
hyp9, and
hyp10), and P blast cells. Of the seam cells, only the T cell expressed
psa-3. During mitosis of the T cell, the PSA-3 protein was uniformly distributed in the T cell. Soon after the T cell division (before V6 cell division, which occurs about 30 min after T cell division), the
psa-3 expression in the two daughter cells was almost the same. In the later stage, after V6 cell division, the
psa-3 expression in T.a had decreased and that in T.p increased. After the next round of divisions, the
psa-3 expression had greatly increased in the posterior (T.pa and T.pp), but not the anterior, granddaughters.