• The blood-testes barrier prevents sperm cell antigens from provoking an autoimmune response (p. 647)
• Vaginal acidity inhibits the spread of pathogens (p. 655)
• The placenta is an immunologically privileged site that is normally protected from immune attack (p. 670)
• A mother's breast milk provides antibodies that passively immunize her baby .(p. 678)
The Immune System
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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.