Purpose: Early gastrointestinal tumors can be removed by endoscopic procedures. Endoscopic mucosal dissection (ESD) requires submucosal fluid injection to provide mucosal elevation and prevent intraoperative perforation. However. the clinically applied normal saline mucosal elevation height is low for a short time. https://www.pomyslnaszycie.com/puffy-spa-headband-supply/