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Concepts in the thesaurus ranked by the number of abstracts in which they appear in the MEDLINE text corpus.

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posted on 19.11.2013, 03:22 by Herman H. H. B. M. van Haagen, Peter A. C. 't Hoen, Barend Mons, Erik A. Schultes

Generic concepts appear in a large number of abstracts while specific concepts, such as proteins (red points below log 5) tend to occur in a smaller number of abstracts. Not plotted are the 308,656 concepts having no occurrence in MEDLINE abstracts.