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Summary of Changes in 2003 MeSH

1251* descriptors were added representing concepts with no directly corresponding descriptors in 2002 MeSH (i.e., new concepts and records);
93 descriptors were replaced with more up-to-date terminology;
20 descriptors were deleted;
1727 see references (print entry terms) were added.
1 qualifier was added.
1 publication type was deleted.
* Nanotechnology was introduced in January 2002 into 2002 MeSH and is included in this total.


Last updated: 18 October 2002