@globaljaybird I edited it. My wording reflected long time exposure to blood collections, where the donors are different…
I had a bone graft before a dental implant using donor tissue. The oral surgeon made sure I knew where it came from–I had a choice between artificial, bovine, my own (i.e., from the hip), or donor tissue. He believed donor tissue was most effective, at least of the three that didn’t involve gouging my hip. In these cases I think it is actually ground up, the organic material is removed, and it is the minerals remaining that are packed into the bone cavity to form the substrate for your own bone tissue to form. And if I recall correctly, ultimately your body “resorbs” it and replaces it with your own tissue. Pretty weird stuff.