然后通过免疫磁性细胞分选技术分离出播散的肿瘤细胞并进行培养，对培养成活的肿瘤细胞在鉴定来源的同时进行生物学活性检测，从细胞学角度判断入血肿瘤细胞形成转移灶的能力。

Secondly, we separated the tumor cells in blood samples by IMS and cultured it carefully, activities of the tumor cells has been tested to confirm their ability to form a successful metastasis.

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