| Field code | P_DNA_B2 | 
| Field description | Patient DNA-B, 2nd allele | 
| Field type | Alphanumeric Length: 20 | 
| Field rule | Values according to WHO nomenclature _ see note 3 in the appendix  | 
                        
| Dictionary field | HLA-B (molecular) (HLA-B molecular result per WHO nomenclature) | 
| EMDIS messages | 
                                
                                    ALM_REQ PAT_UPD  | 
                        
| WMDA XML fields related to dictionary field | 
                                
                                    B(HLA-B) |