Lock And Key
A Podcast Of Unnecessary Detail
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The Complexity of Immune Cells
Virus is a thing that you don't want in your body because it might hurt you and it's alive. So how do these immune cells detect pathogens? They have on the surface a big old molecule that is for detecting a particular molecule found on pathogens. And when those two come together, the key fits the lock. It activates the immune cell, and that causes a whole cascade of things to happen. But here's the problem. There are billions of different ways to be a virus or to be a bacteria. You weren't looking for it, strictly speaking. I can't tell if you're cutting out my analogy or not. We've finished with that. The debate about whether viruses
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