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diff --git a/biblio/10331267.mdwn b/biblio/10331267.mdwn
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+[[!meta title="Complete sequence, gene arrangement, and genetic code of mitochondrial DNA of the cephalochordate Branchiostoma floridae (Amphioxus)"]]
+[[!tag mitochondrion]]
+
+Mol Biol Evol. 1999 Mar;16(3):410-8 doi:10.1093/oxfordjournals.molbev.a026122
+
+Boore JL, Daehler LL, Brown WM.
+
+Complete sequence, gene arrangement, and genetic code of mitochondrial DNA of the cephalochordate Branchiostoma floridae (Amphioxus)
+
+[[!pmid 10331267 desc="AGA encodes serine in amphioxus mitochondrial DNA.  AGG
+is absent.  AGA and AGG are reduced in frequencey compared to the AGY serine
+codons, which suggests a that the common ancestor of chordates had a
+precondition for AGR reassignment."]]

diff --git a/tags/mitochondrion.mdwn b/tags/mitochondrion.mdwn
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--- a/tags/mitochondrion.mdwn
+++ b/tags/mitochondrion.mdwn
@@ -14,7 +14,8 @@ https://en.wikipedia.org/wiki/Ascidian_mitochondrial_code
    genetic code.
  - [[Spruyt and coll, 1998|biblio/9628930]] found a putative TCT (Gly) tRNA
    in the mitochondrial genome of the amphioxus (in which they also show
-   that the AGG codon is not used).
+   that the AGG codon is not used), but [[Boore, Daehler and Brown, 1999|biblio/10331267]]
+   rebutted the suggestion of a AGA reassignment to Gly.
  - [[Kondow and coll, 1999|biblio/10352185]] sequenced a Gly(U*CU) tRNA
    in _Halocynthia roretzi._.
  - [[Yokobori and coll, 1999|biblio/10581290]] sequenced the mitochondrial