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Fig. 1B. —Use of "Clone Stamp Tool." After selecting "Clone Stamp Tool" (black arrow) from "Toolbox," "Brush" is selected from Photoshop (Adobe Systems, Mountain View, CA) marquee. In this example, brush size of 45 pixels has been chosen. Brush is positioned over dark, dustfree area of ventricle next to white dust motes (white arrows). Select "Alt" and click (Windows [Microsoft, Redmond, WA) or "Option" and click (Macintosh OS, Apple Computer, Cupertino, CA) to sample region. Note brush changes into rubber stamp during this maneuver.