11.2: The Innate Immune Response Last updated Jan 3, 2021 Save as PDF 11.1C: Overview of the Immune System 11.2A: Natural Killer Cells Page ID8694 BoundlessBoundless ( \newcommand{\kernel}{\mathrm{null}\,}\) Topic hierarchy11.2A: Natural Killer CellsNatural killer cells are part of the innate immune response that recognize abnormal MHC I molecules on infected/tumor cells and kill them.11.2B: Physical and Chemical Barriers11.2C: The Complement System11.2D: Pathogen Recognition