Several organs in the human body become less efficient or are completely functionless as a result of different reasons such as ageing, accidents, infections, disorders and so on. The lives of these people are difficult and even fatality may take place under such conditions. Nevertheless, if people get the necessary organ under these conditions, lives can be saved. Some organs like one of the kidneys or the skin and so on can be donated during lifetime. However, several factors such as the blood group, diseases, disorders, age and so on should be considered during organ transplantation. Meanwhile, organs like liver, heart and eyes can only be donated posthumously (after death). As per tradition, human bodies are usually disposed of after death. But, the progress in science has made many realise that many organs remain functional for certain periods, even after death occurs, under specific conditions. These can be transplanted to the person who needs it.
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