NES and Barrett esophagus: BE mice had significantly less Nestin-/- doublets than control mice, and cyclopamine treatment prevented the lowering of Nestin expression (Tukey-Kramer post-hoc tests, p = 0.00017 for vehicle-injected control vs. BE mice; p = 0.042 for vehicle- vs. cyclopamine-injected BE mice; p = 0.70 for cyclopamine-injected control vs. BE mice).