AKA xenotransplantation: a transplantation of cells, tissues, or organs,from a one organism to another of a different species. An example would be bovine pericardium as a dural substitute in operations on humans.
Glossary
WP Glossary
XRT
Radiotherapy – XRT is a common abbreviation used in describing or speaking about radiation therapy used to treat cancers and other tumors.
zoonotic
a infectious disease that is transmitted from an animal to a human. The transmission can be via a vector.