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Rac1 was up‐regulated in osteosarcoma tissues with low levels of miR‐224. (A) Rac1 was detected by qRT‐PCR in tissues from 35 osteosarcoma patients. (B) Of the 35 osteosarcoma tissues, Rac1 was up‐regulated in 28 tumour tissues compared with non‐tumour tissues. (C) Among pairs of osteosarcoma tissues and non‐tumour tissues, there was an inverse correlation between Rac1 and miR‐224 expression.
