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Effects of treatment with Pyropia yezoensis peptide [PYP1 (1–20)] on Ras, Raf, MEK and ERK (A) protein and (B) mRNA expression levels in IEC-6 cells. Whole cell extracts were prepared and analyzed by western blot analysis using anti-Ras, anti-Raf, anti-MEK, anti-phosphorylated-ERK, anti-ERK and anti-glyceraldehyde 3-phosphate dehydrogenase (GAPDH) antibodies.
