In the absence of antigen, the t cells did not interact with tumor cells, and could not sustain an active migratory behavior within tumors.

但是如果没有抗原的话，这些T细胞不能和肿瘤细胞相互作用，也不能在肿瘤组织内维持积极的迁移能力。

youdao

In the absence of antigen, the t cells did not interact with tumor cells, and could not sustain an active migratory behavior within tumors.

但是如果没有抗原的话，这些T细胞不能和肿瘤细胞相互作用，也不能在肿瘤组织内维持积极的迁移能力。

youdao