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. 2012 Apr 23;7(4):e35684. doi: 10.1371/journal.pone.0035684

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Wu et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Real-time PCR was performed to determine mRNA expression of Smad2 (A) and Smad3 (B) in 16 gastric cancer tissues and surrounding non-tumor tissues (No. 1–5: middle differentiated cancer; No. 6–13: poorly differentiated cancer and No. 14–16: signet-ring cell cancer).