Conclusion: Prevalence of mast cells in OA synovial tissue is relatively high and associates with structural damage in OA patients, suggesting a role of mast cells in this disease. (C) 2015... Show moreConclusion: Prevalence of mast cells in OA synovial tissue is relatively high and associates with structural damage in OA patients, suggesting a role of mast cells in this disease. (C) 2015 Osteoarthritis Research Society International. Published by Elsevier Ltd. All rights reserved. Show less