This code system http://hl7.org/fhir/biologicallyderivedproductdispense-origin-relationship defines the following codes:

Code Display Definition
autologous Autologous The product was pre-donated by the recipient
related Related The product is from a blood relation of the recipient
directed Directed The donor has been specifically selected to provide product for the recipient
allogeneic" Allogeneic The donor and the recipient are unrelated
xenogenic Xenogenic The product is from a different species to the recipient
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