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Effect of secreted frizzled-related protein 2 ectopic expression on cell proliferation. A: Strong secreted frizzled-related protein 2 (SFRP2) mRNA expression in KYSE30 cells transfected with pcDNA3.1/SFRP2, but not in KYSE30 and cells transfected with the empty vector; B: SFRP2-transfected KYSE30 cells growing significantly slower than control and parental cells (aP < 0.05).
