37bc410dee52a5ace2a6bc4e7c6edc959a26a263
kuhn
  Tue Feb 22 14:32:04 2022 -0800
added definition of acronym

diff --git src/hg/makeDb/trackDb/crispr.html src/hg/makeDb/trackDb/crispr.html
index 82384d5..bee42ee 100644
--- src/hg/makeDb/trackDb/crispr.html
+++ src/hg/makeDb/trackDb/crispr.html
@@ -59,31 +59,32 @@
 also shown in parentheses after the percentile.</li>
 <li>The <a
 href="https://www.crisprscan.org/">Moreno-Mateos 2015 Efficiency
 score</a> should be used instead of the Doench 2016 score when transcribing the
 guide in vitro with a T7 promoter, e.g. for injections in mouse, zebrafish or
 Xenopus embryos. The Moreno-Mateos score is given in percentiles and the raw value in parentheses, see the note above.</li> </ol>
 </p>
 
 <p>Click onto features to show all scores and predicted off-targets with up to
 four mismatches. The Out-of-Frame score by <a href="#References">Bae et al. 2014</a>
 is correlated with
 the probability that mutations induced by the guide RNA will disrupt the open
 reading frame. The authors recommend out-of-frame scores &gt; 66 to create
 knock-outs with a single guide efficiently.<p>
 
-<p>Off-target sites are sorted by the CFD score (<a href="https://www.nature.com/articles/nbt.3437"
+<p>Off-target sites are sorted by the CFD (Cutting Frequency Determination) 
+score (<a href="https://www.nature.com/articles/nbt.3437"
 target="_blank">Doench et al. 2016</a>). 
 The higher the CFD score, the more likely there is off-target cleavage at that site. 
 Off-targets with a CFD score &lt; 0.023 are not shown on this page, but are availble  when 
 following the link to the external CRISPOR tool. 
 When compared against experimentally validated off-targets by 
 <a href="#References">Haeussler et al. 2016</a>, the large majority of predicted
 off-targets with CFD scores &lt; 0.023 were false-positives.</p>
 
 <h2>Methods</h2>
 
 <h3>Relationship between predictions and experimental data</h3>
 
 <p>
 Like most algorithms, the MIT specificity score is not always a perfect
 predictor of off-target effects. Despite low scores, many tested guides