Viewpoint: Yes, xenotransplants from pigs should be prohibited because the risks of transmitting pig viruses to patients and the general population are too great.

Viewpoint: No, xenotransplants from pigs raised at so-called organ farms should not be prohibited because the risks of disease transmission are relatively small and are vastly outweighed by the need for donor organs.

The ancient idea of using the parts or products of exotic animals as tonics and medicines has been replaced by modern attempts to transplant living cells, tissues, and organs from animals to humans. A transplantation of cells or organs...