When you have completed this section, you should be able to
• explain how B cells recognize and respond to an antigen;
• describe structure, types, and actions of antibodies;
• explain the mechanism of memory in humoral immunity; and
• compare and contrast cellular and humoral immunity.
Humoral immunity is a more indirect method of defense than cellular immunity. Instead of directly contacting enemy cells, the B lymphocytes of humoral immunity produce antibodies that bind to antigens and tag them for destruction by other means. But like cellular immunity, humoral immunity works in three stages—recognition, attack, and memory.
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.