Shaw SK, Hermanowski-Vosatka A, Shibahara T, McCormick BA, Parkos CA, Carlson SL, Ebert EC, Brenner MB, Madara JL. Migration of intestinal intraepithelial lymphocytes into a polarized epithelial monolayer. Am J Physiol. 1998 09; 275(3):G584-91.