| gptkbp:instanceOf | gptkb:blood_group_system 
 | 
                        
                            
                                | gptkbp:antibodyAntiA | absent in group A and AB present in group B and O
 
 | 
                        
                            
                                | gptkbp:antibodyAntiB | absent in group B and AB present in group A and O
 
 | 
                        
                            
                                | gptkbp:antigenA | absent in group B and O present in group A and AB
 
 | 
                        
                            
                                | gptkbp:antigenB | absent in group A and O present in group B and AB
 
 | 
                        
                            
                                | gptkbp:determines | presence or absence of antigens A and B on red blood cells 
 | 
                        
                            
                                | gptkbp:discoveredBy | gptkb:Karl_Landsteiner 
 | 
                        
                            
                                | gptkbp:discoveredIn | 1901 
 | 
                        
                            
                                | gptkbp:gene | gptkb:ABO_gene 
 | 
                        
                            
                                | gptkbp:hasBloodGroup | O A
 AB
 B
 
 | 
                        
                            
                                | gptkbp:hasUniversalDonor | gptkb:O_negative 
 | 
                        
                            
                                | gptkbp:hasUniversalRecipient | gptkb:AB_positive 
 | 
                        
                            
                                | gptkbp:importantFor | forensic science organ transplantation
 paternity testing
 
 | 
                        
                            
                                | gptkbp:locatedOnChromosome | gptkb:chromosome_9 
 | 
                        
                            
                                | gptkbp:namedAfter | gptkb:A_and_B_antigens 
 | 
                        
                            
                                | gptkbp:relatedTo | gptkb:Rh_blood_group_system 
 | 
                        
                            
                                | gptkbp:significance | hemolytic disease of the newborn hemolytic transfusion reactions
 
 | 
                        
                            
                                | gptkbp:usedFor | blood transfusion compatibility 
 | 
                        
                            
                                | gptkbp:usedIn | clinical medicine immunohematology
 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:H_antigen gptkb:ABO
 gptkb:A_antigen
 gptkb:FUT2_gene
 
 | 
                        
                            
                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | ABO blood group system 
 |