For the first time, scientists around the world had a limitless number of cells they could use to test the effects of diseases, medicines and chemicals.

VOA: special.2010.07.21

It goes - going through this process of amplifying divisions, every division increasing the number of cells by a factor of two and these cells becoming more differentiated around the way.

它经历了一系列扩增性的分裂过程,每次分化,细胞数目都翻一番,而在此过程中细胞分化得更成熟

耶鲁公开课 - 生物医学工程探索课程节选

This makes sense; the rate at which the cell population is growing, the derivative dX/dt, is proportional to the number of cells I have.

这个说的通,细胞数目的增长速度,就是导数dX/dt,和细胞数目呈比例关系

耶鲁公开课 - 生物医学工程探索课程节选

The mixture caused the number of stem cells to decrease.

VOA: special.2010.06.01

If these 8 million people , would correspond to the number of neurons in the brain, the equivalent of the hair cells that you could get out of a single cochlea would be equivalent to one person walking down 42nd street.

如果这八百万人,相当于大脑中的神经元数量的话，能从一个耳蜗内取出的毛细胞,就好比是,第42大街上的某位行人。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

If X is the number of cells, then the rate of change of X, dX/dt, the rate of change of the cell population, how fast division is taking is proportional to the number of cells I have.

如果X是细胞数目,那么X的改变率就是dX/dt,就是细胞数目的改变率,分裂的速度有多快,和细胞数量呈比例关系

耶鲁公开课 - 生物医学工程探索课程节选

This is what makes cells different, the number and quantity of the genes that they express.

这就是细胞产生差异的原因,即表达的基因在数量和质量上的差异

耶鲁公开课 - 生物医学工程探索课程节选

One of the interesting properties of cells that are in exponential growth is that the time to increase the cell number by a factor of 2 is always the same.

细胞有一个有趣的性质,那就是在指数增长阶段,细胞增长的速度,永远是以二为底数来增长的

耶鲁公开课 - 生物医学工程探索课程节选

We talked about two weeks ago, that if you had a population of cells, you could grow those population of cells and you could make, if they adapted the culture properly, you could make an infinite number of cells from one starting solution.

两周前我们讲到,如果你有一群细胞,你可以使细胞数量增长,如果培养得当,你可以,从开始的营养液中制造出无限数量的细胞

耶鲁公开课 - 生物医学工程探索课程节选