The largest molecules in organisms are carbohydrates proteins lipids nucleic acids

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.