| gptkbp:instanceOf | gptkb:protein 
 | 
                        
                            
                                | gptkbp:alsoKnownAs | cluster of differentiation antigens 
 | 
                        
                            
                                | gptkbp:definedIn | gptkb:International_Workshop_on_Human_Leukocyte_Differentiation_Antigens 
 | 
                        
                            
                                | gptkbp:diagnosedBy | gptkb:leukemia immunodeficiencies
 
 | 
                        
                            
                                | gptkbp:example | gptkb:CD56 gptkb:CD20
 gptkb:CD45
 gptkb:CD34
 gptkb:CD133
 gptkb:CD3
 gptkb:CD19
 gptkb:CD4
 gptkb:CD8
 gptkb:CD14
 gptkb:CD38
 gptkb:CD25
 CD16
 
 | 
                        
                            
                                | gptkbp:firstDefined | 1982 
 | 
                        
                            
                                | gptkbp:foundIn | gptkb:leukocytes dendritic cells
 monocytes
 lymphocytes
 granulocytes
 some non-hematopoietic cells
 
 | 
                        
                            
                                | gptkbp:hasLetter | CD1 to CD371 (as of 2024) 
 | 
                        
                            
                                | gptkbp:recognizedBy | monoclonal antibodies 
 | 
                        
                            
                                | gptkbp:usedFor | gptkb:research diagnostics
 therapeutic targeting
 monitoring disease progression
 cell sorting
 cell surface marker identification
 monitoring immune response
 prognostics
 
 | 
                        
                            
                                | gptkbp:usedIn | immunology hematology
 immunophenotyping
 flow cytometry
 
 | 
                        
                            
                                | gptkbp:usedToClassify | immune cell subsets 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:White_Blood_Cells 
 | 
                        
                            
                                | gptkbp:bfsLayer | 6 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | CD antigens 
 |