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Histological slides (H&E stain) from treatment of clots in canine inferior vena cava segments. A control sample is shown in (a) and a magnified view in (b). A treated sample exposed to 300 seconds of ultrasound at pā of 12 MPa is shown in (c) and a magnified view (d). Both samples were intact, and no discernable damage was observed to the treated vein wall.
