found: MESH, Aug. 1, 2007(Microbubbles; scope note: very small encapsulated gas bubbles (diameters of micrometers) that can be used in diagnostic and therapeutic applications)
found: Wilson web thes., Aug. 1, 2007(Microbubbles; BT: Bubbles)
found: British medical journal online, 2001, no. 322, accessed online Aug. 1, 2007:p. 1222-1225 (Science, medicine, and the future: microbubble contrast agents: a new era in ultrasound; contrast agents are widely used in imaging, but until recently they had little place in ultrasonography. This has changed with the introduction of microbubbles---small (typically 3 micrometers in diameter) gas filled bubbles that are usually injected intravenously)
found: A-Z of nanotechnology website, Aug. 1, 2007(article: Tracking cancer with micro-bubbles: Using a completely new generation of ultrasound contrast media, also known as micro-bubbles ...)