Expression of beta-dystroglycan is lost in squamous cell and adenocarcinomas of the oesophagus and this loss is significantly related to increasing tumour stage by Parbery-Clark, C, Lippitt, J, Bury, J, Ackroyd, R, Stoddard, C, Wyman, A, Harrison, R, Hamdy, F, Winder, S, Cross, S