Sequencing analysis of RNA and DNA of exons 1 through 11 shows p53 gene alterations to be present in almost 100 % of head and neck squamous cell cancers. - Kropveld,A.; Rozemuller,E.H.; Leppers,F.G.; Scheidel,K.C.; de Weger,R.A.; Koole,R.; Hordijk,G.J.; Slootweg,P.J.; Tilanus,M.G. (Lab. Invest., 1999)