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Effects of titanium particles on mRNA and protein level of CD147. QPCR showed the expression of CD147 mRNA in KG-1a cells co-cultured with 0.2–1.2 µm (A), 1.2-10 µm(B) and >10 µm (C) titanium particles; the protein level of CD147 in KG-1a cells co-cultured with 0.2–1.2, 1.2-10 and >10µm titanium particles was detected by western blot (D). *P<0.05; **P<0.01; ***P<0.001
