11.10: Immunity and Molecular Signals Last updated Jan 3, 2021 Save as PDF 11.9B: Macrophages 11.10A: Clonal Selection and Tolerance Page ID11803 ( \newcommand{\kernel}{\mathrm{null}\,}\) Topic hierarchy11.10A: Clonal Selection and Tolerance11.10B: Cytokines and Chemokines11.10C: Superantigens11.10D: The Complement SystemThe complement system helps antibodies and phagocytic cells clear pathogens from an organism.