Micro 7: Elements of Host Protective Responses
This episode opens the immunology arc by introducing the host as an active participant in infection, not a passive surface upon which microbes act. Drawing from Murray’s chapter, it outlines the fundamental components of host defence that operate continuously, often unnoticed, to prevent infection from taking hold.
The episode explores physical barriers, chemical defences, cellular responses, and systemic coordination - framing immunity as an integrated, multi-layered system rather than a single mechanism. Skin, mucosa, phagocytes, inflammatory mediators, and complement are presented as parts…
The skinny
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