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A del with bracketed position.
Also known as: Deletion designation, Missing segment notation
The cytogenomic notation for a deletion, where a segment of a chromosome is absent.
Describes a deletion, in which a segment of a chromosome is absent.
Contexts: Laboratory
States the extent of what is missing rather than only its presence, so the notation records the size of an absence in the same way a Leiden lacuna does.
Contexts: Laboratory
A three-letter abbreviation followed by bracketed groups naming the chromosome and the extent of the missing segment.