"Respiratory System" 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 tubular and cavernous organs and structures, by means of which pulmonary ventilation and gas exchange between ambient air and the blood are brought about.
This graph shows the total number of publications written about "Respiratory System" by people in this website by year, and whether "Respiratory System" was a major or minor topic of these publications.
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