translation.en: So, they put the cells in cultures, chicken cells, dumped the virus on it, and it would pile up, and they would say, this is malignant and this is normal.
translation.zh: 所以，他们培养了那些鸡的细胞， 并倒入一些病毒， 它们就会堆积起来， 然后他们就说这些是恶性肿瘤，这些是良性肿瘤。