LNP, or lipid nanoparticles, are tiny particles made of lipids that can encapsulate and deliver various substances, such as drugs or genetic material. They are particularly important in the field of medicine for delivering mRNA vaccines, like those developed for COVID-19, as they protect the fragile mRNA and help it enter cells effectively. These nanoparticles are designed to improve the stability and absorption of therapeutic agents in the body. By using LNPs, researchers can enhance the efficacy of treatments and reduce side effects, making them a valuable tool in modern pharmaceuticals and biotechnology, including the development of new vaccines and therapies.