OK Thanks. I've heard of something very similar to this before. Not quite the same, but similar.

I have a vague recollection about a procedure involving the removal of bone marrow, giving the person involved chemo, and after a certain period of time, returning the bone marrow back to the person.

If I could remember the circumstances, I could probably bring up references, but unfortunately my MS brain is in "dead" mode today.

It sounds familiar, but the brain ain't doing what it's meant to, and I could be totally off course.

I'd have probably been of more use if I'd said nothing at all. Sorry.