I believe you have 4 locations they are under the UC Davis system. Refrigerate the body and take or send it in. If you are near to one of the locations, call them and see how to drop off.
I believe if you need to ship, they have a way of giving you a shipping label.
https://cahfs.vetmed.ucdavis.edu/
I believe if you need to ship, they have a way of giving you a shipping label.
https://cahfs.vetmed.ucdavis.edu/
