Indexing principles for Category G Phenomena and Processes
Category G contains an extensive array of terms for biological, chemical, physical processes and phenomena. It also includes terms for mathematical concepts.
Biological phenomena include a wide variety of terms covering
- biochemical and pharmacologic processes or phenomena
The MeSH terms from this category tend to be very specific. The indexer must always check the tree to make sure that the most specific term is selected.
Terms in category G are frequently coordinated with one of the following,
- an anatomical term
- an organism term
- a disease term
- a drug term
with the subheadings /physiol / physiopathol (diseases only), /metab, /genet or /immunol.
Body temperature regulation in obesity
*BODY TEMPERATURE REGULATION
OBESITY / *physiopathol
Glycolysis in the liver.
LIVER / * metab
IM vs NIM
Category G terms tend to be IM. However, some terms tend to be NIM coordinates for IM terms in other categories. For example, DIGESTION would likely be IM but OXIDATION-REDUCTION would be NIM, except in very general articles on oxidation-reduction per se. Check the MeSH annotations of each term for guidance.