– As a first line of defense, natural killer (NK) cells play a crucial role in the fight against infections.The presented study is the first of its kind that ascribes CD56dimCD16 NKG2C-expressing NK cells a crucial role in biasing adaptive immune responses upon influenza vaccination and suggests NKG2C as a potential biomarker in predicting pandemic influenza vaccine responsiveness. NKG2C/CD159c Protein, Human, Recombinant (His & Avi) is expressed in HEK293 mammalian cells with N-His-Avi tag. The predicted molecular weight is 15.3 kDa and the accession number is P26717.