Formulas to Display in PubMed Titles and Abstracts

[Editor's note: This change was implemented in PubMed on June 6, 2018.]

On June 1, 2018, the National Library of Medicine will begin displaying formulas in citation titles, abstracts, and keywords in PubMed. Currently, formulas are replaced with [Formula: see text] (see Figure 1).

Figure 1: Formula replaced with [Formula: see text] in the PubMed abstract display.

With this enhancement to PubMed, you will see formulas in the PubMed summary and abstract displays when these data are available in new citations (see Figure 2).

Figure 2: Formula shown in the PubMed abstract display after June 1, 2018.

Also, we will be 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, forthcoming DTD that will be in use as of June 1, 2018. You can download the forthcoming DTD for June 2018 now. Existing content will be valid against the new DTD. You can also download sample XML files with MathML 3.0 tags.