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The growth in soft agar of MCF-7RANTES, MCF-7IL6, MCF-7RANTES+IL6 and control cells was performed as described in the Material and Methods (*P < 0.05; Student’s t-test). EVn: cells transfected with the empty vector (neomycin); EVz: cells transfected with the empty vector (zeocin); EVn+z: cells transfected with both empty vectors.
