Task: Answer Verification
Input (English): Question: Does plateletpheresis cause long-standing platelet-derived growth factor release into the donor blood?
Answer: Only a slight and rapidly reversible increase in soluble PDGF-AB was found during plateletpheresis and no increase in soluble TGF-beta1 and beta-TG was found. This change should not be harmful to the donor.
Output (English): no