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Secondary SchoolBiology 15 points
Why is it that the organs cannot be taken from just anybody? What is it that the doctors check?
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Every individual has am immune system that protects the individual from the entry of pathogens or harmful microorganisms that can diseases. This immune system identifies the microorganisms as foreign bodies and kill them by a collective effort.
In case of organ transplantation, similar thing happens. When an organ is introduced in the recipients body, his immune system thinks that the cells of the donated organ are harmful foreign bodies and thereby reject them. This is why organ transplantation fails most of the time.
However transplantation from identical twins have higher chances of success as both their immune systems are identical and the transplantation goes unnoticed by the body immune system