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338 páginas impressas
- Publicação original
- 2018
- Ano da publicação
- 2018
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Citações
- mishiareeze721fez uma citaçãohá 4 meses. If it weren’t for this combat readiness—learned through training by our gut bacteria—there would be no blood groups and any donor could give blood to any recipient. For newborn babies, who do not yet have many bacteria in their guts, this is indeed the case. They can theoretically receive transfusions of blood from any group without any incompatibility effects. (As a precaution, hospitals give babies blood from the mother’s blood group, since antibodies from the mother can find their way into the baby’s bloodstream.) As soon as babies begin to develop a rudimentary immune system and gut flora, they can only tolerate blood from their own group.
- mishiareeze721fez uma citaçãohá 4 mesesHowever, we cannot receive blood from donors whose blood cells have a different blood-group marker on their surface. It would immediately remind our immune system of bacteria, and since the immune system knows that bacteria have no business being in the bloodstream, it would consider the donated blood cells an enemy and cause the cells to form clumps
- mishiareeze721fez uma citaçãohá 4 mesesSome bacteria have structures on their surface that bear a close resemblance to those on the surface of our own cells. This is the reason why, for example, scarlet fever should be treated immediately with antibiotics. If it is not treated quickly, the immune system can begin to mistake the cells of the joints or other organs for the bacteria that cause scarlet fever and attack them. It might suddenly think our knee is a nasty sore-throat germ hiding out in our leg. It happens rarely—but it does happen
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