这些药物也有一定的抑制人体自身抑制癌症生长免疫反应，使癌细胞更容易扩散。
They also partly suppress the body's own immune reaction to any cancer growths, making the cancer more prone to spread.
因为这种病毒是在鸡蛋内部生长，所以不接触或者清洗蛋壳并不能阻止沙门氏菌的扩散。
The bacteria grows inside the egg itself, so avoiding touching or washing the shell won't help stop the spread.
许多种类的肿瘤可产生比普通细胞高得多的表皮生长因子受体，影响之一就是刺激了肿瘤细胞的扩散。
Many types of tumour produce far more EGFR than normal cells do, and one effect of that is to stimulate the proliferation of tumour cells.
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