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NR4A1 expression is promoted during OA. A. NR4A1 mRNA level detected by qRT-PCR. B. NR4A1 protein level detected by western blot and the histogram drawn based on repeated results. The experiments are repeated five times. *P < 0.05. OA, osteoarthritis. NR4A1, nuclear subfamily 4, group A, member 1.
