Memory cells are long lasting cells that remember this exposure and can respond very quickly on second exposure.

记忆细胞可以长时间记忆与抗原的接触,并在再次免疫中迅速做出应答

耶鲁公开课 - 生物医学工程探索课程节选

By cell/cell contact, I mean that there's a receptor in one cell that makes some kind of a chemical interaction with a receptor in another cell.

通过细胞之间的接触,我的意思是在一种细胞上的受体,能与另一细胞上的受体发生某种化学反应

耶鲁公开课 - 生物医学工程探索课程节选

Then there's a part that's inside the cell sticking down into the cell cytoplasm.

然后还有部分穿过质膜,进入细胞内部,与细胞质相接触

耶鲁公开课 - 生物医学工程探索课程节选

Sometimes signals are transmitted between cells by cell/cell contact.

有时细胞与细胞靠互相接触进行信号传递

耶鲁公开课 - 生物医学工程探索课程节选

Then we're going to take these plasmid vectors and we're going to somehow put them in contact with cells in such a way that the cells ingest the DNA and they use it.

然后要使这些质粒载体,以一种特别的方式与细胞接触,让细胞吞入质粒载体并使之表达

耶鲁公开课 - 生物医学工程探索课程节选

These cells around the outside form the interface, the placenta, where the maternal blood circulation meets the embryonic circulation and nutrients are passed back and forth that way in a very highly regulated and important way.

外层的细胞形成接触面,即胎盘,是母血与胎血,进行血液交换,及营养物质交换的场所,整个过程高度有序并且非常重要

耶鲁公开课 - 生物医学工程探索课程节选

Another subset of T-cells called T helper cells will recognize that signal by direct contact with it, and they will become activated and proliferate.

另外一个T细胞的亚群是辅助性T细胞,辅助性T细胞可识别与其接触的抗原信号,并被激活,开始增殖

耶鲁公开课 - 生物医学工程探索课程节选