| GTEX-1NV5F | 61-70 | Female | GTEX-1NV5F-1226 | Atrial appendage | PAXgene | 1 | 2 pieces; 10% internal fat content | Acceptable |  | 
                    
                        
                            | GTEX-1NV8Z | 61-70 | Male | GTEX-1NV8Z-1126 | Atrial appendage | PAXgene | 1 | 2 pieces, no abnormalities | Acceptable |  | 
                    
                        
                            | GTEX-1O97I | 61-70 | Male | GTEX-1O97I-0926 | Atrial appendage | PAXgene | 1 | 2 pieces; minimal stromal content | Acceptable |  | 
                    
                        
                            | GTEX-1O9I2 | 51-60 | Male | GTEX-1O9I2-0926 | Atrial appendage | PAXgene | 1 | 2 pieces, no abnormalities | Acceptable |  | 
                    
                        
                            | GTEX-1OFPY | 61-70 | Male | GTEX-1OFPY-0926 | Atrial appendage | PAXgene | 0 | 2 pieces; 1 piece surrounded by up to 1.4mm fibrous subpericardial layer; other has 60% fibrofatty content | Acceptable |  | 
                    
                        
                            | GTEX-1OJC4 | 51-60 | Female | GTEX-1OJC4-0926 | Atrial appendage | PAXgene | 1 | 2 pieces | Acceptable |  | 
                    
                        
                            | GTEX-1OKEX | 61-70 | Male | GTEX-1OKEX-0526 | Atrial appendage | PAXgene | 1 | 2 pieces, no abnormalities | Acceptable |  | 
                    
                        
                            | GTEX-1OZHM | 41-50 | Male | GTEX-1OZHM-1026 | Atrial appendage | PAXgene | 1 | 2 pieces, no abnormalities | Acceptable |  | 
                    
                        
                            | GTEX-1P4AB | 51-60 | Male | GTEX-1P4AB-0926 | Atrial appendage | PAXgene | 1 | 2 pieces; no excess fat or fibrous stroma | Acceptable |  | 
                    
                        
                            | GTEX-1POEN | 21-40 | Female | GTEX-1POEN-0726 | Atrial appendage | PAXgene | 1 | 2 pieces, no abnormalities, ~50% interstitial fat | Acceptable |  | 
                    
                        
                            | GTEX-1PPGY | 61-70 | Male | GTEX-1PPGY-0926 | Atrial appendage | PAXgene | 1 | 2 pieces; fibromuscular and adipose tissue; one with ~50% adipose tissue (outlined); congestion | Acceptable |  | 
                    
                        
                            | GTEX-1PPH6 | 61-70 | Female | GTEX-1PPH6-1226 | Atrial appendage | PAXgene | 1 | 2 pieces; 20-30% fibrous and fatty content | Unacceptable |  | 
                    
                        
                            | GTEX-1PPH7 | 41-50 | Male | GTEX-1PPH7-2126 | Atrial appendage | PAXgene | 1 | 2 pieces; 10 & 20% fat content | Acceptable |  | 
                    
                        
                            | GTEX-1PWST | 61-70 | Male | GTEX-1PWST-1226 | Atrial appendage | PAXgene | 1 | 2 pieces, fragmented, no abnormalities | Acceptable |  | 
                    
                        
                            | GTEX-1QAET | 51-60 | Male | GTEX-1QAET-0626 | Atrial appendage | PAXgene | 1 | 2 pieces; 10% fibrous content | Acceptable |  | 
                    
                        
                            | GTEX-1QCLZ | 61-70 | Female | GTEX-1QCLZ-1126 | Atrial appendage | PAXgene | 1 | 2 pieces; one well trimmed fibromuscular tissue and other with ~15% internal/external fat | Acceptable |  | 
                    
                        
                            | GTEX-1QEPI | 61-70 | Female | GTEX-1QEPI-1126 | Atrial appendage | PAXgene | 1 | 3 pieces; 1 has 40% fibrofatty content | Acceptable |  | 
                    
                        
                            | GTEX-1QMI2 | 61-70 | Male | GTEX-1QMI2-1026 | Atrial appendage | PAXgene | 1 | 2 pieces, no abnormalities | Acceptable |  | 
                    
                        
                            | GTEX-1QP29 | 51-60 | Male | GTEX-1QP29-1426 | Atrial appendage | PAXgene | 1 | 2 pieces; essentially well trimmed fibromuscular tissue | Acceptable |  | 
                    
                        
                            | GTEX-1QP2A | 51-60 | Male | GTEX-1QP2A-1026 | Atrial appendage | PAXgene | 1 | 2 fragmented pieces; 30% fibrous content in largest piece | Acceptable |  | 
                    
                        
                            | GTEX-1QP6S | 41-50 | Male | GTEX-1QP6S-1026 | Atrial appendage | PAXgene | 1 | 2 pieces; fibromuscular tissue and ~50% internal/external fat (outlined) | Acceptable |  | 
                    
                        
                            | GTEX-1QPFJ | 21-40 | Female | GTEX-1QPFJ-0926 | Atrial appendage | PAXgene | 1 | 2 pieces; 10% internal fat | Acceptable |  | 
                    
                        
                            | GTEX-1R46S | 61-70 | Female | GTEX-1R46S-0826 | Atrial appendage | PAXgene | 1 | 2 pieces, no abnormalities | Acceptable |  | 
                    
                        
                            | GTEX-1R7EV | 41-50 | Male | GTEX-1R7EV-0426 | Atrial appendage | PAXgene | 1 | 2 pieces; 5-10% internal (interstitial, perivascular and subepicardial) fat (arrows) | Acceptable |  | 
                    
                        
                            | GTEX-1R9JW | 21-40 | Female | GTEX-1R9JW-0426 | Atrial appendage | PAXgene | 1 | 2 pieces, no abnormalities | Acceptable |  |