It is a product of the National Center for Biotechnology Information (NCBI), at the U.S. National Library of Medicine (NLM), part of the National Institutes of Health (NIH). As a lot of life sciences research is funded by the NIH, the results of that research are deposited in PubMed, making it a huge and extremely valuable open access database of material. Not every article is full-text, however; some publishers require an embargo (a period of time before an item becomes available) on their articles, so you will sometimes find a citation of an article and its abstract but not the full text. Stevens may have access to some of these articles, so look for the journals in the Journal Finder.
The database was created in 1996 and now contains almost 30 million references from the following components:
PubMed also includes citations from other, related sources. Much of what can be found in PubMed contains or links to full-text.
Source: U.S. National Library of Medicine. (2017). MEDLINE, PubMed, and PMC (PubMed Central): How are they different? [fact sheet]. Retrieved from https://www.nlm.nih.gov/pubs/factsheets/dif_med_pub.html.
PubMed Guides and Tutorials
MeSH stands for Medical Subject Headings, and is the NLM-controlled vocabulary thesaurus used for indexing articles in PubMed (specifically, articles from journals in the MEDLINE collection). Thus, while you can search PubMed using keywords and find many results, you will have better luck using the specific vocabulary used by PubMed itself.
The National Library of Medicine has been collecting and organizing citations of biomedical literature since its founding. For more on the history of these systems, see the articles below.
Image: IBM magnetic tape drives of the IBM 370/155 with NLM staff
Source: The development of the Medical Literature Analysis and Retrieval System (MEDLARS). Journal of the Medical Library Association, 95(4), 416–425. http://doi.org/10.3163/1536-5050.95.4.416