Epidermal growth factor receptor (EGFR) high gene copy number and activating mutations in lung adenocarcinomas are not consistently accompanied by positivity for EGFR protein by standard immunohistochemistry. - Pinter F; Papay J; Almasi A; Sapi Z; Szabo E; Kanya M; Tamasi A; Jori B; Varkondi E; Moldvay J; Szondy K; Keri G; et al. (The Journal of molecular diagnostics : JMD, 2008)