Mean diameters of chick intracoelomic hybrid intestinal grafts derived from transfected MIC 216 myofibroblast-endodermal associations. Diameter was measured of grafts derived from the association of MIC 216 (n = 2), pCEN (n = 6), EpiS2 (n = 6), or EpiAS1 (n = 3) cells with intestinal endoderms. Data were analyzed by one-way ANOVA followed by the Tukey HSD post test. *P < 0.01 for EpiS2 versus EpiAS1.