What is PubMed?
PubMed is a free resource for locating articles from the biomedical and life sciences literature, including clinical medicine, nursing, pharmacy, veterinary medicine, and numerous allied health fields.
With a single search box, PubMed lets you search multiple databases at once, which adds up to 34 million citations and abstracts of biomedical literature.
For more information about how journals are selected to to be included in PubMed databases, check out this short video from the National Library of Medicine.