CD8 T cells, differentiation, functional diversity, human cytomegalovirus, infected cell killing, pp65
biomaterial-associated infections, commensal microflora, biofilm-repellent, macrophages, immunomodulatory, osteoimmunomodulatory, osteogenic
SARS-CoV-2 vaccination, COVID-19, breakthrough infection, Omicron, IgA, antibody, T cells, variants of concern, elderly individuals