Biology › Section Q · Immunity and reproduction › Topic Q.1
Innate immune response
Your body fights off most microbes before you ever notice them. The innate immune system does that work: barriers, engulfing cells, inflammation and defensive proteins that act within minutes and treat every intruder in much the same way.
In this topic
- Defence without memory
- The first barriers
- Recognising and eating intruders
- The innate cell crew
- Inflammation
- Cytokines, fever and interferons
- Natural killer cells
- Complement
- Worked example: a splinter
- Worked example: which cells do NK cells kill?
- Common mistakes to avoid
- Key takeaways
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