Fig. 2From: Activation of calcitonin gene-related peptide signaling through the prostaglandin E2-EP1/EP2/EP4 receptor pathway in synovium of knee osteoarthritis patientsImmunolocalization of CGRP and COX-2 in synovial tissue. Immunolocalization of CGRP (a) and Cox-2 (b). Scale bar = 100 μmBack to article page