一般说来，癌瘤不具有危险信号因此它们不会引发强烈的免疫反应。

Generally, cancers do not have danger signals and, therefore, they cannot elicit strong immune reactions.

youdao

一般说来，癌瘤不具有危险信号因此它们不会引发强烈的免疫反应。

Generally, cancers do not have danger signals and, therefore, they cannot elicit strong immune reactions.

youdao