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ATF4 does not influence the proliferation of mouse breast cancer cells in vitro. (a) ATF4 overexpression did not influence the proliferation of 4T1-Luc cells in vitro. (b) ATF4 overexpression did not influence the proliferation of 4TO7 cells in vitro. (c) ATF4 overexpression did not influence Ki67 expression level in 4T1-Luc and 4TO7 cells.
