That doesn’t appear to be blood based.
I’d say it’s fibrin.
I think they tested it and it’s amyloid.
> I’d say it’s fibrin.
MIS-C?
(I just searched for fibrin and covid, and i’m not trying to imply anything by it here, just trying to add to discussion)
I would guess these are the junk proteins we’ve heard about that the body produces as a side effect from producing spike proteins. The body has no idea how to process it. The body won’t reject it or attack it either because it’s produced by the body and thus not recognized as foreign invasion. So it continues to grow in size by natural cellular mitosis. Just my layman’s guess.