Fig. 6. Laminal distribution of cannabinoid receptor 1 (CB1) in the superficial dorsal horn of the spinal cord of sarcoma-implanted mice. ( A1 –A3 , B1 –B3 , and C1 –C3 ) Double immunostaining for CB1 ( red ) with calcitonin gene-related peptide (CGRP) ( green ), isolectin B4 (IB4) ( green ), and protein kinase Cγ (PKCγ) ( green ), respectively. contra = contralateral to the site of sarcoma implantation; ipsi = ipsilateral to the site of sarcoma implantation. Scale bar = 200 μm.