"South America" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
The southern continent of the Western Hemisphere, extending southward from the Colombia-Panama border.
Below are MeSH descriptors whose meaning is more general than "South America".
Below are MeSH descriptors whose meaning is more specific than "South America".
This graph shows the total number of publications written about "South America" by people in this website by year, and whether "South America" was a major or minor topic of these publications.
To see the data from this visualization as text, click here.