PolySon™ H and PolySon™ L consist of micrometer-sized air-filled polymeric particles specifically formulated for pre-clinical ultrasound imaging.
Due to large differences in their density and compressibility compared to tissue or plasma, dispersed PolySon microbubbles are highly echogenic.
Upon intravenous injection, the intact microbubbles circulate in the blood pool for up to 10 minutes and are taken up by the reticuloendothelial system (RES), particularly in the liver and spleen.

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