About: http://webisa.webdatacommons.org/151267067

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Tubes are already known which comprise as guide bolus a balloon which can be filled with a liquid, for example mercury or water, with the aim of facilitating placement of the flexible tube.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com