目的：研究三氧化二砷体外对K562细胞凋亡的诱导作用，探讨三氧化二砷促进慢粒细胞系k562细胞凋亡的机制。

Objective: to investigate the apoptosis inducing function of arsenic trioxide on CML cell line K562 in vitro and elucidate the possible cellular and molecular mechanisms.

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目的：探讨三氧化二砷、塞莱昔布对HCCLM_3肝癌细胞生长、粘附、运动、侵袭及其复发、转移相关基因表达的影响。

Objective: Discuss the influence of As_2O_3 and Celecoxib on HCCLM_3 hepatoma cell growth, adhesion, movement, invasion and expression of relative gene with hepatoma recurrence and metastasis.

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