New answers tagged autoimmune
Since these cells are there by the development of the immune system, the immune cells recognize them as self. By blood transfusion with incompatible blood type, the immune system recognizes the blood cells with different histocompatibility antigens (A,B,Rh etc...) as non-self, that's why it attacks them.
The immune system recognizes patterns - incase of innate immunity and shapes - incase of active immunity. I am making a few assumptions: The Shrinking would result in a smaller version of "the person" - meaning he/she is a bacteria sized person capable of executing all actions that a human can do. The shrunk person is placed inside the blood vessel or ...
This is a very interesting question. As others have alluded to, the body generally recognises self and non-self. However, as with any biology it's not that simple. Even leaving aside autoimmune disorders, the body doesn't always attack non-self and doesn't always leave self alone. Think of a pregnancy - the foetus is non-self, and yet the body doesn't reject ...
Its impossible to happend, why worried about it? Maybe you`re writing a fiction book. I cant answered using biological arguments because this is fiction.
How does the body know you is you? There's two forms of immunity: innate and adaptive. Innate The innate immune system is the first line of defence that basically works on pattern recognition. "If I see these chemicals, they're usually bacteria/fungi/viruses, so I'm going to kill anything with these chemicals." Little you wouldn't have any of these ...
When your body develops, immune system learns which tissues are foreign and which are innate. So usually immune system does not attack host's cells. Opposite case is autoimmune diseases. Immune system does that by addressing surface proteins of cells. Only foreign cells, never presented before, cause response. If you think that large-you immune system will ...
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