translation.en: In order to do that, however, we needed to have a method of distinguishing normal from malignant, and on the left is the single normal cell, human breast, put in three-dimensional gooey gel that has extracellular matrix, it makes all these beautiful structures.
translation.zh: 然而，为了实现它， 我们需要找到分辨正常与异常的方法。 左边的是单个正常细胞， 人类乳房细胞，放置在有细胞外基质 中，就是这块黏稠的凝胶中，它组成了这所有美丽的结构。