This static online collection of MEDLINE®/PubMed® citations hosted by the Lister Hill National Center for Biomedical Communications, U.S. National Library of Medicine (NLM) provides access to static text versions of citations consisting of titles and abstracts (when available) for articles included in the MEDLINE database in a given year.
Retrieve Static Text:
To retrieve the static text in a specific year, for a given PMID, use the following URL: https://bionlp.nlm.nih.gov/base/2016/21113336 where 2016 indicates the MEDLINE Baseline year, and 21113336 is the PMID for the citation you want to retrieve.
Retrieve Static Text with Version:
To retrieve the static text in a specific year, for a given version of a specific PMID, use the following URL: https://bionlp.nlm.nih.gov/base/2016/21113336.1 where 2016 indicates the MEDLINE Baseline year, and 21113336 is the PMID for the citation you want to retrieve, and .1 is the version you want.
Download List of Available PMIDs for a MEDLINE Baseline Year:
To retrieve the complete gzipped list of available PMIDs for a given year, use the following URL: https://bionlp.nlm.nih.gov/base/PMIDs/2016.gz where 2016 indicates the MEDLINE Baseline year, and 2016.gz is the full name of the file that contains the list of PMIDs for that year.
New years will be added with the release of each new MEDLINE Baseline which typically occurs in mid to late December each year. We currently have titles and abstracts from 2002 through 2016 from the various MEDLINE Baselines.
For more information on MEDLINE Baselines, please see the following URL: https://mbr.nlm.nih.gov/
For information about the differences between the MEDLINE and PubMed databases, please see the following URL: https://www.nlm.nih.gov/pubs/factsheets/dif_med_pub.html.
In 2013, article versioning started appearing in the MEDLINE Baseline files. When different versions of a PMID are available within a given year, the PMID by itself will always reference the latest available version of the article within the given year. You will also be able to reference particular versions on their own with the original version having version ".1". Not all of the versions are available - in some cases, we only have available the latest version of a PMID (for example, 2013/21894257) has no version 1 available.
In the 2013 MEDLINE Baseline, PMID 21113336 has two versions available. The original version (.1) and a later version (.2). If you reference just the PMID (21113336) in this case, you will recieve the latest version (.2). If you want the original version, you will need to specify "21113336.1" in your request.
21113336 points to 21113336.2
21113336.1 original article
21113336.2 latest article
For more information on versioning, please see the following URL: https://www.nlm.nih.gov/services/article_versions.html
Each file contains only the title and abstract (if present). The title (TI) and abstract (AB) will each be on a single line terminating with a newline. The following example is for PMID 21113336 from the 2013 MEDLINE Baseline:
Are node-based and stem-based clades equivalent? Insights from graph theory.
Despite the prominence of "tree-thinking" among contemporary systematists and evolutionary biologists, the biological meaning of different mathematical representations of phylogenies may still be muddled. We compare two basic kinds of discrete mathematical models used to portray phylogenetic relationships among species and higher taxa: stem-based trees and node-based trees. Each model is a tree in the sense that is commonly used in mathematics; the difference between them lies in the biological interpretation of their vertices and edges. Stem-based and node-based trees carry exactly the same information and the biological interpretation of each is similar. Translation between these two kinds of trees can be accomplished by a simple algorithm, which we provide. With the mathematical representation of stem-based and node-based trees clarified, we argue for a distinction between types of trees and types of names. Node-based and stem-based trees contain exactly the same information for naming clades. However, evolutionary concepts, such as monophyly, are represented as different mathematical substructures in the two models. For a given stem-based tree, one should employ stem-based names, whereas for a given node-based tree, one should use node-based names, but applying a node-based name to a stem-based tree is not logical because node-based names cannot exist on a stem-based tree and visa versa. Authors might use node-based and stem-based concepts of monophyly for the same representation of a phylogeny, yet, if so, they must recognize that such a representation differs from the graphical models used for computing in phylogenetic systematics.