请再查看一下关于错误的堆饯追踪，并且查看一下这个错误出现在编码哪里。

Please review the stack trace for more information about the error and where it originated in the code.

youdao

现在编码将使用MediationLogWriter的LoggingMediation处理程序类。

We now code a LoggingMediation handler class that will use the MediationLogWriter.

youdao

Now the challenge is not just to get the DNA that encodes a gene into a cell, the challenge is to get it into the cell in a form where the cell can use it, can express it and make proteins from it.

现在的问题不仅在于,要将编码基因的DNA转进细胞,还要让它进入细胞之后,能够为细胞所用,能够表达并合成蛋白质

耶鲁公开课 - 生物医学工程探索课程节选