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CD4 and CD8 lymphocyte typing. (A, B) Lymphocyte typing for autogenous bone at 4 and 26 weeks. (C, D) Lymphocyte typing for artificial bone at 4 and 26 weeks. (E, F) Lymphocyte typing for allogenic bone at 4 and 26 weeks. (G, H) Contents of CD4 and CD8 at 4 and 26 weeks. Data were presented as mean ± SD by t-test (n = 5). **P < 0.01; *P < 0.05
