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Fig. 1 | BMC Cancer

Fig. 1

From: Serum microRNA signatures and metabolomics have high diagnostic value in gastric cancer

Fig. 1

Flow diagram of trial selection. Abbreviations: CEA, carcinoembryonic antigen; CA19–9, carbohydrate antigen 19–9; qRT-PCR, quantitative reverse-transcription polymerase chain reaction; GC/MS, gas chromatography/mass spectrometry; PCA, principal component analysis; PLS-DA, partial least squares-discriminate analysis; OPLS-DA, orthogonal partial least squares-discriminant analysis

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