Table 4.

Example of CUIs assigned to the term lens

CUI	STR	SAB	TTY
C0023308	Lens Diseases	MSH	MH
C0023317	Lens, Crystalline	MSH	MH
C0023318	Lenses	MSH	MH

The information is taken from MRCONSO table fields and shows CUIs linked to the term lens and the MeSH term linked to it. CUI is the concept identifier in the Metathesaurus, STR is the MeSH Heading linked to the concept, SAB indicates the source of the string which is MeSH in this case, TTY indicates that the strings in the table are MeSH Headings.