| http://www.w3.org/ns/prov#value | - carbon of sulfur hexafluoride gasUS6123923 *18 Dec 199726 Sep 2000Imarx Pharmaceutical Corp.Optoacoustic contrast agents and methods for their useUS6139819 *17 Sep 199731 Oct 2000Imarx Pharmaceutical Corp.Comprising lipid, protein, polymer and/or surfactant, and a gas, in combination with a targeting ligand; targeting ligand targets coagula, including emboli and/or thrombi, particularly in patient
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