Abstract: The bronchial carcinoma is the most common tumour found in humans world-wide and is in most cases beyond remedy. The invention relates to a method for identifying, marking and treating epithelial lung tumour cells, specifically of an adenocarcinoma, with the aid of novel treatment targets, and to means for carrying out said method. At the basis of the invention is the discovery that the expression of genes that code for CAM and ECM molecules is modified in c-raf and/or c-myc induced adenocarcinomas of the lung. Cell-adhesion proteins and extra-cellular matrix proteins constitute the treatment targets.