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. 2019 Mar 5;10(2):e02805-18. doi: 10.1128/mBio.02805-18

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Copyright © 2019 Park et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

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FIG 6 — Corn root cap cells secrete DNA that is degraded by DNase I. (A) Corn roots were touched to glass slides, causing border cells (arrows) to slough off. Slides were stained with Sytox green, which stains extracellular DNA (arrowheads) or DNA in dead cells. Left, fluorescence; middle, differential interference contrast (DIC); right, merged. Scale bar is 20 μm. (B) DNase treatment degrades extracellular DNA. Left, corn roots and root cap border cells (arrowheads), Sytox green staining outside border cells (arrows); right, no exDNA staining after DNase treatment. Scale bar is 50 μm.