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Composition comprising gas-filled microcapsules for ultrasound mediated delivery

  • US 20090041833A1
  • Filed: 04/11/2006
  • Published: 02/12/2009
  • Est. Priority Date: 04/18/2005
  • Status: Abandoned Application
First Claim
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1. A composition comprising a bioactive agent and a plurality of gas-filled microcapsules having a polymeric and/or lipid shell, wherein said microcapsules have a resistance to a mechanical index (MI) of an applied ultrasound wave of at least 0.15 and said bioactive agent is substantially unbound to said shell.

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