It is the use of non-human animal cells, tissues and organs in human patients. These cells can be implanted or enclosed in a device used outside the body. The tissue is harvested from animals already being butchered. Immune rejection remains the biggest challenge for this. A worrisome element of xenotransplant is the potential for infectious disease from donor animals which is called xenozoonosis.
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Another infectious disease, Hepatitis B, which is caused by a virus, occurs largely among newborns …