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CCL2 promotes LM8 cell growth in vitro. (A and B) Colony formation assay of the LM8 cells transfected with negative control, CCL2-sh1 (P<0.01, compared with mock) or CCL2-sh3 vectors (p<0.0001, compared with mock). (C) Effect of CCL2 on the proliferation of LM8 cells was detected using an MTT assay. Error bars represent the mean ± standard deviation. NC, negative control; mock, untransfected; sh, short hairpin; OD. optical density.
