Gene expression is a tightly regulated process where genetic information is transcribed into mRNA and then translated into proteins. This process can vary significantly between different types of tissues. For instance, the gene expression profile of liver cells (hepatocytes) is distinct from that of skin cells (keratinocytes). Regulatory elements such as promoters and enhancers, along with transcription factors, play a crucial role in ensuring that genes are expressed in the right cells at the right time.
