Stimulating T cells with SARS-CoV-2 (Spike Protein) Omicron/B.1.1.529 Mutation Peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. A lyophilised mixture of 80 peptides of the spike glycoprotein of SARS-CoV-2 Omicron variant (B.1.1.529), these peptides selectively cover the mutated regions in the spike protein of the SARS-CoV-2 Omicron variant, compared to wild-type. Through interactions with the angiotensin-converting enzyme 2 (ACE2) receptor, the spike protein enables the virus to attach to the cell membrane, and plays a critical role in viral entry (Hoffmann et al.; Walls et al.). Viral peptide pools are useful for a broad range of applications, including vaccine development, immunological research, and diagnostic assay development.