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Snail immunoreactivity in carcinoma cell lines.A. SK-LU-1 carcinoma cell line, B. SK-LU-1 snail knockdown cell line, C. SK-MES-1 cell line and D. SK-MES-1 snail knockdown cell line. Scale bars are 200 μm. Snail positivity is showed with arrows (→) in figures A and C. lack of snail expression is pointed with arrows (→) in figures B and D.
