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RET and ARTN expression in MCF7 cells treated for 6 hours A. and 24 hours B. with GDNF/gfra1, IL8 and TNFalpha. Same experiments repeated in T47D cells are reported in panels C. and D. Values are the mean ±SD of at least two independent experiments performed in triplicate; asterisks (*) indicate statistically significant differences (*p<0.05; **p<0.01).
