周异，东汉末年官员，官至洛阳令。家族名人众多，其从父周景、从兄周忠皆历位汉三公，其子周瑜，为三国东吴名帅，威震三国。
周期特异性药物 CCSA ; cell cycle specific agents ; cell cycle specific drugs ; cycle-specific agent
细胞周期特异性药物 CCSA ; cell cycle specific agents
周年变异 [生物] annuation
周期变异 CVIB ; cyclic mutation
异色周期性 allocycly
细胞周期非特异性药物 CCNSA ; cell cycle nonspecific agents ; CCNSAcell cycle non-specific agents
周期非特异性药物 CCNSC ; cell cycle non-specific drugs ; cell cycle nonspecific agents ; CCNSA
异周性 allocycly
周期非特异性药 CCNSA
目的探讨非清髓异基因外周造血干细胞移植（NAST）在治疗高龄血液病中的作用。
Objective To study the role of nonmyeloablative allogeneic peripheral blood stem cell transplantation (NAST) in the treatment of hematological diseases in elderly patients.
术后2周、1月和2月取材时，异种组各有一例ADM呈现黄褐色，与周围组织分离。
At 2 weeks, 1 and 2 months, there was respectively one ADM that showed filemot and was separated by host in xeno-ADM group.
组织学观察结果：术后4周，大体观察，自体骨组与异种骨组关节面光滑。
Histological observation: at postoperative 4 weeks, in gross observation, articular surface of autologous bone group and xenograft bone group was smooth.
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