A macrophage encounters the pathogen Klebsiella pneumonia bacteria, and ingests, processes and displays antigens on its surface. A T-Helper cell recognizes the antigen, causing it to release chemical messages called cytokines to recruit cytotoxic T-cells and B-cells, initiating the immune response. Chapter Opener for The Ultimate Bodypedia: An Amazing Inside-Out Tour of the Human Body, National Geographic Society.
Keywords: Airbrush, Color, 3D, Editorial, Publishing, Allergy / Immunology, Cell biology / Histology
© Cynthia Turner