Xen- (prefix)

Foreign or other.

As in:</P> > >Xenoantigen -- An antigen that is found in more than one species.

>Xenograft -- A surgical graft of tissue from one species to an unlike species, genus or family.

>Xenotransplantation -- Transplantation from one species to a foreign one, e.g., the heart transplant from a baboon to Baby Fae in 1984 at Loma Linda University, California.

>Xenotropic virus -- A virus that can grow in the cells of a species foreign to the normal host species.</LI></UL> The origin of 'xen-' is from the Late Latin, from Greek, from 'xenos' meaning stranger, guest, or host.

Xen- and xeno- are variant forms of the same prefix.