Particle pattern of different biolistics transfection methods.

<p>Millipore diffuser membranes (3 µm) were placed at the sample target position for shooting. After shooting, the diffuser membranes were scanned using a regular flatbed scanner. <i>A1</i>–<i>C1</i>, particle patterns of standard Bio-Rad setup, O'Brien setup, and Zhao setup, respectively. <i>A2</i>–<i>C2</i>, images with increased digital gain showing the much-reduced particle density in Zhao setup (C2). Panels are 6.9 mm wide.