Russian authorities have approved the first xenotransplantation treatment – the implanting of animal cells into the human body – for sale in that country, marking the first time such a treatment has been appoved anywhere. The type 1 diabetes treatment involves inserting insulin-producing pig cells coated in seaweed into the human pancreas to replace native cells that have been depleted there. [...] The seaweed coating keeps the bodies immune system from attacking the foreign animal cells.
Previously, previously, previously, previously.
Also: The Repository of All Human Knowledge says:
Pancreas in popular culture
In Ferris Bueller's Day Off it is indicated that the group consumed pancreas at the French restaurant.
Apparently pig heart is very compatible with the human heart... but I met an Israeli once who was working on an alternative, since it's not kosher!