Barrett's metaplasia glands are clonal, contain multiple stem cells and share a common squamous progenitor. - Nicholson, Anna M.; Graham, Trevor A.; Simpson, Ashley; Humphries, Adam; Burch, Nicola; Rodriguez-Justo, Manuel; Novelli, Marco; Harrison, Rebecca; Wright, Nicholas A.; McDonald, Stuart A. C.; Jankowski, Janusz A. (Gut (0017-5749), 2012)