Fig. 1From: The important role of circulating CYFRA21-1 in metastasis diagnosis and prognostic value compared with carcinoembryonic antigen and neuron-specific enolase in lung cancer patientsThe survival status of lung cancer patients in training and validation groups a: CEA, b: CYFRA21-1, c: NSE, d: positive numbers *P < 0.05, **P < 0.001Back to article page