Later, scientists from Harvard University in the us showed that mouse pancreas cells could be reprogrammed by infecting them with viruses carrying genes for just three transcriptionfactors.
For example, circuits can simulate the interactions between genes involved in lactose metabolism and the transcriptionfactors that regulate their expression in bacterial cells.
例如，电路可以模拟出乳糖代谢基因与调节细菌细胞内乳糖代谢基因表达的转录因子之间的互动过程。
3
Each type of cell is thought to have a special set of transcriptionfactors.