CD nomenclature rules.

Name: CD nomenclature rules.
Creator: AAT Bioquest
License: https://www.aatbio.com/tou.html

Designation ▲ ▼	Placement ▲ ▼	Definition ▲ ▼	Example ▲ ▼
Arbitrary number	Follows CD designation	Assigned to a molecule recognized by two or more mAbs. The number designates both the group of mAbs recognizing the cell surface molecule as well as the molecule itself.	CD4
Lowercase "w"	Precedes arbitrary number designation	Assigned to an insufficiently characterized molecule or ones only recognized by a single mAb. (W = Workshop)	CDw15
Lowercase letter	Follows arbitrary number designation	Assigned to molecules that share a commonality such as a common chain or the same gene family.	CD1a-CD1e share a common chain; CD66a-CD66f same gene family
Uppercase letter	Follows arbitrary number designation	Indicates a spliced variant of the extracellular domain of a cell surface molecule.	CD45RA or CD45RO
Superscript "+/-"	Follows arbitrary number designation	Indicates the presence or absence of that molecule on a cell or cell population.	CD4⁺CD8^-
Superscript "high/low"	Follows arbitrary number or uppercase letter designation	Indicates either a low or high expression level of a CD molecule by a cell subset.	CD4⁺CD45RA^lowCD45RO^high

References

MLA	"Quest Database™ CD nomenclature rules.." AAT Bioquest, Inc., 19 May. 2025, https://www.aatbio.com/data-sets/cd-nomenclature-rules.
APA	AAT Bioquest, Inc. (2025, May 19). Quest Database™ CD nomenclature rules.. AAT Bioquest. https://www.aatbio.com/data-sets/cd-nomenclature-rules.
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