[Utilities-announce] PubMed E-Utilities DTD Mid-year Update June 2018

[utilities-announce at ncbi.nlm.nih.gov]

Dear NCBI PubMed E-Utilities Users,

On June 6, 2018, we began displaying formulas in citation titles, abstracts, and keywords in PubMed.  Previously, formulas were replaced with [Formula: see text].   With this enhancement to PubMed, you will see formulas in the PubMed summary and abstract displays when these data are available.  We are also including the MathML 3.0 element tags in PubMed XML.

To support the addition of MathML tagging in our XML, we have created a new DTD which is in use as of June 5, 2018.  You can download the DTD for June 2018<http://dtd.nlm.nih.gov/ncbi/pubmed/out/180601/pubmed_180601.zip>.  Existing content is valid against the new DTD. You can also download sample XML files with MathML 3.0 tags<ftp://ftp.ncbi.nlm.nih.gov/pubmed/sample-2018-06-01/>.

Thank you,
PubMed Development Team


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