Concern

Something from which one or more similar and separate things have developed, or to which they are attached.

An organizational header for concepts representing mostly abstract entities.

The set of all possible Valid Value meanings of a Data Element Concept expressed without representation.

In biology, the beginning of pregnancy, marked by fertilization of an egg by a sperm.

A unique identifier (code) assigned for each concept that belongs to a particular controlled terminology.

The standing of a concept in relation to currently accepted classifications and concepts. In NCI Thesaurus and NCI Metathesaurus, concept status subtypes…