Development of a chemoresistant orthotopic human nonsmall cell lung carcinoma model in nude mice: analyses of tumor heterogenity in relation to the immuno histochemical levels of expression of cyclooxygenase-2, omithine decarboxylase, lung-related resistance protein, prostaglandin E synthetase, and glutathione-S-transferase-alpha(GST)-alpha, GST-mu, and GST-pi - Mathieu, A; Remmelink, M; DʼHaene, N; Penant, S; Gaussin, J F; Van Ginckel, R; Darro, F; Kiss, R; Salmon, I (Cancer, 2004)