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The immune system has two types of immunity.
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You have innate, which are typically the physical barriers you're born with, and you have adaptive, which develops over time based on what you're exposed to.
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So when we talk about adaptive immunity, the main cells involved in this are your lymphocytes, which includes your b cells and your t cells.
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So your adaptive immunity includes the use of antibody.
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Which are a y -shaped protein, which are going to connect to certain antigens on a pathogenic surface.
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And this will induce an immune response to fight it.
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One significant part of your antibodies is they cannot react to normal cells within your body.
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We'll say this is a red blood cell in your body.
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You do not want your immunoglobulins attaching to this and destroying all your red blood cells.
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That would be very bad and would threaten your life.
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So for the adaptive immune response, it has to recognize what is you and what could be a possible pathogen or something that isn't you.
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We call this self versus non -self recognition.
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Another property this has is you have many different types of immunoglobulins in your body.
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You have an amino globulin that will respond to a certain protein on, say, smallpox, and you have a different antibody that will react to a different protein on, say, chickenpox.
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Now, each of these different viruses and many different bacteria have tons and tons of different proteins on their surface.
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They have many...