: It triggers antibodies that target "conserved" (unchanging) parts of the virus.
: Scientists used "mosaic" nanoparticles that display different Receptor-Binding Domains (RBDs) from various coronaviruses on a single particle. jongmerl 7com
A click. The box opened.
Another angle: "7com" might stand for seven components or services. A feature could be a checklist or guide for users. Or perhaps a step-by-step tutorial. Since the user asked for a "helpful feature," it's likely something interactive or informative. jongmerl 7com