What describes xenotransplantation?

Xenotransplantation refers specifically to the transplantation of organs and tissues between different species. This field of study aims to address the shortage of human organ donors and includes potential sources such as pigs or other animals whose organs can be transplanted into humans. Research in xenotransplantation focuses on overcoming issues such as organ rejection and ensuring compatibility between species.

The other options do not accurately describe xenotransplantation. Transplantation of organs within the same species pertains to allografts, not xenotransplantation. Cloning animals falls under reproductive technology and does not relate to organ transplantation. The use of artificial organs in animals refers to medical devices, which is also distinct from the concepts encompassed by xenotransplantation. Thus, the definition of xenotransplantation is clearly aligned with transplantation occurring between different species.