To capture material from the paper without causing damage, the team used a technique that involves applying and removing ethylene-vinyl acetate. Then once removed, the material was tested using mass spectrometry. The team found residue containing more than 500 peptides, which they narrowed to 100 of human origin.
From those, they found evidence of ciliopathy, a genetic disorder that compromises cell function and organs. They also found evidence of inflammatory disease, likely resulting in problems with the respiratory tract and skin. And they found compounds that suggested the Count also suffered from hemolacria—a condition that causes blood to mix with fluid in the tear ducts, resulting in blood-tinged tears.
https://phys.org/news/2023-08-vlad-impa ... blood.html