This series studied the patterns of gene expression among different types of gastric tumors. Gastric tumors and adjacent non-tumor normal tissues were obtained from 50 gastric cancer patients of diverse stages (IA, IB, II, IIIA, IIIB, and IV), tumor types (intestinal, diffuse, or mixed), and degree of tumor differentiation (moderately or poorly differentiated). Keywords: Cancer patient samples
Overall design
We obtained both tumor and normal tissue samples from the same patient and hybridized them together to remove any individual biological variations unrelated to gatric cancer progression. We hybridized each patient's sample twice with dye swapping.
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