mRNA technology is a method that uses messenger RNA to instruct cells to produce specific proteins. This technology has gained attention for its role in developing vaccines, particularly the COVID-19 vaccines from Pfizer-BioNTech and Moderna. By introducing a small piece of mRNA into the body, it prompts cells to create a harmless version of the virus's spike protein, which helps the immune system recognize and fight the actual virus. This approach is not limited to vaccines; it has potential applications in treating various diseases, including cancer and genetic disorders. Researchers are exploring how mRNA can be used to deliver therapeutic proteins directly to cells, offering new avenues for medical treatment.