<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi David,<div class=""><br class=""></div><div class="">You can apply a 1mg/ml ployethyleneimine (PEI) solution to your grid.</div><div class=""><br class=""></div><div class="">Patricia</div><div class=""><br class=""><div class="">
<meta charset="UTF-8" class=""><div>_________________________________</div><div>Patricia Grob, Ph.D.<br class="">Research Specialist<br class="">Nogales Lab<br class="">HHMI at UC Berkeley<br class="">URL: <a href="https://urldefense.com/v3/__http://cryoem.berkeley.edu__;!!Mih3wA!D5BrGbNg2MbSHGdmRCJC78ymKwGFgQxsS1ko6D0cdTeGv0Vyhri0r0YBqyR_vslvazCBhdqlxDlUcnmCKo-j$" class="">cryoem.berkeley.edu</a><br class=""><a href="mailto:pgrob@berkeley.edu" class="">Email: pgrob@berkeley.edu</a><br class=""><br class=""><br class=""></div>
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<div><br class=""><blockquote type="cite" class=""><div class="">On May 19, 2025, at 4:45 AM, PEREZ-MORGA David via 3dem <<a href="mailto:3dem@ncmir.ucsd.edu" class="">3dem@ncmir.ucsd.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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Dear 3dem users,</div>
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Any advice on how to posively charge TEM carbon-film grids?</div>
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Thanks</div>
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David</div>
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<div id="ms-outlook-mobile-signature" class=""><div style="margin: 0cm; font-family: Calibri, sans-serif; font-size: 11pt;" class="">David Pérez-Morga</div><p style="margin: 0cm; font-family: Calibri, sans-serif; font-size: 11pt;" class=""> </p><div style="margin: 0cm; font-family: Calibri, sans-serif; font-size: 11pt;" class=""><span style="color: rgb(5, 99, 193);" class=""><i class=""><u class=""><a href="https://urldefense.com/v3/__http://parasmol.ulb.be/__;!!Mih3wA!GCidJgEO8IR5DBtmsHlZ1xMn5tStEEgMF3x2YYQr6hsFcnpO4LeTFOMnSCWWcR_etu3hIvvHCr2PjsVOmOUFMk5JlLkK6g$" data-outlook-id="a2f0c892-a984-4487-8571-b535830207b8" style="color: rgb(5, 99, 193); margin-top: 0px; margin-bottom: 0px;" class="">Molecular
Parasitology Lab.</a></u></i><u class=""><a href="https://urldefense.com/v3/__http://parasmol.ulb.be/__;!!Mih3wA!GCidJgEO8IR5DBtmsHlZ1xMn5tStEEgMF3x2YYQr6hsFcnpO4LeTFOMnSCWWcR_etu3hIvvHCr2PjsVOmOUFMk5JlLkK6g$" data-outlook-id="3236237e-7397-4b29-8ef3-60cf85211188" style="color: rgb(5, 99, 193); margin-top: 0px; margin-bottom: 0px;" class=""> </a></u></span><span style="color: rgb(68, 114, 196);" class=""><br class="">
</span><span style="font-size: 10pt; color: rgb(68, 114, 196);" class=""> </span><span style="font-size: 10pt; color: rgb(84, 130, 53);" class="">IBMM-Université Libre de Bruxelles</span></div><div style="margin: 0cm; font-family: Calibri, sans-serif; font-size: 11pt;" class=""><span style="color: rgb(5, 99, 193);" class=""><i class=""><u class=""><a href="https://urldefense.com/v3/__https://www.cmmi.be/microscopy__;!!Mih3wA!GCidJgEO8IR5DBtmsHlZ1xMn5tStEEgMF3x2YYQr6hsFcnpO4LeTFOMnSCWWcR_etu3hIvvHCr2PjsVOmOUFMk5KQGcYng$" data-outlook-id="e99f38b4-ac51-43f2-8097-b2e004a64227" style="color: rgb(5, 99, 193); margin-top: 0px; margin-bottom: 0px;" class="">Electron
Microscopy Lab.</a></u></i></span><span style="color: rgb(84, 130, 53);" class=""><br class="">
</span><span style="font-size: 10pt; color: rgb(84, 130, 53);" class="">CMMI-Université Libre de Bruxelles</span></div>
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