03-P102 Expression and regulation of the claudin family of tight junction proteins during gastrulation

the embryo, consistent with a shared origin of these cell-types. We also present evidence that iridophore precursors are likely to also have glial potential. Finally, we engineered constitutively active form of ltk gene by analogy with oncogenic gene nucleophosmin-anaplastic lymphoma kinase, and examine the results from experiments asking what happens to NCCs with constitutively active Ltk signaling.