

Each immunogenicity group contained 10 animals receiving either lipid nanoparticles–encapsulated mRNA or adjuvanted protein formulations, with 5 animals receiving empty lipid nanoparticles as negative controls.
Nanoparticle is just a term for a particle that is measured in nanometers. The lipid nanoparticles above are pieces of mRNA (also nanoparticles) wrapped in lipids, or protein formulations wrapped in lipids.
She’s lovely!