ANI

diff --git a/biblio/29506021.mdwn b/biblio/29506021.mdwn
index e3cb72ad131213628ded4d55d44bff3ee7df5578..b527789a75d5074f2b5bbaac8649b23074a3233b 100644 (file)
--- a/biblio/29506021.mdwn
+++ b/biblio/29506021.mdwn
@@ -7,4 +7,8 @@ Bioinformatics. 2018 Jul 15;34(14):2371-2375. doi:10.1093/bioinformatics/bty113
 
 Updating the 97% identity threshold for 16S ribosomal RNA OTUs.
 
-[[!pmid 29506021 desc="Following a benchmark on V4 regions of the 16S rRNA, proposes to raise the threshold to 99% or to just use sequence variants (also called ZOTUS, Zero-radius OTUs."]]
+[[!pmid 29506021 desc="Following a benchmark on V4 regions of the 16S rRNA,
+proposes to raise the threshold to 99% or to just use sequence variants (also
+called ZOTUS, Zero-radius OTUs.  Identity computed as the number of columns
+containing identical letters divided by the number of columns containing at
+least one letter."]]