Fig. 5From: Efficacy of modified thoracoabdominal nerves block through perichondrial approach in open gynecological surgery: a prospective observational pilot study and a cadaveric evaluationA Represents the spread of the dye in the cadaver (the left side of cadaver 2). B Represents the spread of the dye between the costal cartilage and the transverse abdominis muscle. Black arrow represents the dye in the ‘tunnel structure’Back to article page