[balanoceous]

Your point that this is uncharted territory is well-taken, we can't say for sure, but the above poster has it right. I do not know of any circumstance in medicine in which evidence of immune reaction against foreign material would be non-obvious. I'm a pathologist and this is my area of expertise.

[DoreenMichele]

To be clear, I have two points:

1. This is uncharted territory.

2. My understanding is we don't actually understand "normal" rejection all that well to begin with.

If we don't know how and why rejection occurs to begin with, we have no reasonable means to distinguish it from some other type of failure.

But I shall stop annoying professionals with my amateur opinions here.

Have a good day.

[markus92]

We may not know what causes rejection, but are pretty good at seeing the signs of it. Extreme example: if a house collapses, you may not know immediately why it collapsed, but all the debris on the ground is a pretty good sign it's not in one piece anymore.

[DoreenMichele]

Rejection leads to death.

The guy died.

Anyway, trying to walk away from this particular thread.

[chimineycricket]

What kind of logic is that? Ok here:

"We don't see signs that this person was shot in the head"

DoreenMichele: Getting shot in the head leads to death. The guy died.