|  Experiment description  of studies that identified TGFB3 in sEVs | 
                                                                
                                                                                                                                            
                                                                            
                                                                                | 
                                                                                        
                                                                                            | 1 | 
                                                                                                    
                                                                                                        | Experiment ID | 489 | 
                                                                                                                
                                                                                                                    | MISEV standards |  
                                                                                                                    | ✔ 
                                                                                                                                EM
                                                                                                                             | Biophysical techniques |  
                                                                                                                    | ✔ 
                                                                                                                                Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
                                                                                                                             | Enriched markers |  
                                                                                                                    | ✔ 
                                                                                                                                Canx
                                                                                                                             | Negative markers |  
                                                                                                                    | ✔ 
                                                                                                                                NTA
                                                                                                                             | Particle analysis |  |  
                                                                                                        | Identified molecule | Protein |  
                                                                                                        | Identification method | Mass spectrometry |  
                                                                                                        | PubMed ID | 36408942   |  
                                                                                                        | Organism | Rattus norvegicus |  
                                                                                                        | Experiment description | Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells |  
                                                                                                        | Authors | "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ." |  
                                                                                                        | Journal name | Proteomics |  
                                                                                                        | Publication year | 2023 |  
                                                                                                        | Sample | Bone marrow mesenchymal stem cells |  
                                                                                                        | Sample name | BMSC - Passage 6 |  
                                                                                                        | Isolation/purification methods | Differential centrifugation Filtration
 Ultracentrifugation
 |  
                                                                                                        | Flotation density | - |  
                                                                                                        | Molecules identified in the study | Protein |  
                                                                                                        | Methods used in the study | Western blotting Mass spectometry
 |  |  | 
                                                                                                                                            
                                                                            
                                                                                | 
                                                                                        
                                                                                            | 2 | 
                                                                                                    
                                                                                                        | Experiment ID | 490 | 
                                                                                                                
                                                                                                                    | MISEV standards |  
                                                                                                                    | ✔ 
                                                                                                                                EM
                                                                                                                             | Biophysical techniques |  
                                                                                                                    | ✔ 
                                                                                                                                Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
                                                                                                                             | Enriched markers |  
                                                                                                                    | ✔ 
                                                                                                                                Canx
                                                                                                                             | Negative markers |  
                                                                                                                    | ✔ 
                                                                                                                                NTA
                                                                                                                             | Particle analysis |  |  
                                                                                                        | Identified molecule | Protein |  
                                                                                                        | Identification method | Mass spectrometry |  
                                                                                                        | PubMed ID | 36408942   |  
                                                                                                        | Organism | Rattus norvegicus |  
                                                                                                        | Experiment description | Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells |  
                                                                                                        | Authors | "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ." |  
                                                                                                        | Journal name | Proteomics |  
                                                                                                        | Publication year | 2023 |  
                                                                                                        | Sample | Bone marrow mesenchymal stem cells |  
                                                                                                        | Sample name | BMSC - Passage 7 |  
                                                                                                        | Isolation/purification methods | Differential centrifugation Filtration
 Ultracentrifugation
 |  
                                                                                                        | Flotation density | - |  
                                                                                                        | Molecules identified in the study | Protein |  
                                                                                                        | Methods used in the study | Western blotting Mass spectometry
 |  |  | 
                                                                                                                                            
                                                                            
                                                                                | 
                                                                                        
                                                                                            | 3 | 
                                                                                                    
                                                                                                        | Experiment ID | 491 | 
                                                                                                                
                                                                                                                    | MISEV standards |  
                                                                                                                    | ✔ 
                                                                                                                                EM
                                                                                                                             | Biophysical techniques |  
                                                                                                                    | ✔ 
                                                                                                                                Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
                                                                                                                             | Enriched markers |  
                                                                                                                    | ✔ 
                                                                                                                                Canx
                                                                                                                             | Negative markers |  
                                                                                                                    | ✔ 
                                                                                                                                NTA
                                                                                                                             | Particle analysis |  |  
                                                                                                        | Identified molecule | Protein |  
                                                                                                        | Identification method | Mass spectrometry |  
                                                                                                        | PubMed ID | 36408942   |  
                                                                                                        | Organism | Rattus norvegicus |  
                                                                                                        | Experiment description | Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells |  
                                                                                                        | Authors | "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ." |  
                                                                                                        | Journal name | Proteomics |  
                                                                                                        | Publication year | 2023 |  
                                                                                                        | Sample | Bone marrow mesenchymal stem cells |  
                                                                                                        | Sample name | BMSC - Passage 8 |  
                                                                                                        | Isolation/purification methods | Differential centrifugation Filtration
 Ultracentrifugation
 |  
                                                                                                        | Flotation density | - |  
                                                                                                        | Molecules identified in the study | Protein |  
                                                                                                        | Methods used in the study | Western blotting Mass spectometry
 |  |  | 
                                                                                                                                            
                                                                            
                                                                                | 
                                                                                        
                                                                                            | 4 | 
                                                                                                    
                                                                                                        | Experiment ID | 492 | 
                                                                                                                
                                                                                                                    | MISEV standards |  
                                                                                                                    | ✔ 
                                                                                                                                EM
                                                                                                                             | Biophysical techniques |  
                                                                                                                    | ✔ 
                                                                                                                                Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
                                                                                                                             | Enriched markers |  
                                                                                                                    | ✔ 
                                                                                                                                Canx
                                                                                                                             | Negative markers |  
                                                                                                                    | ✔ 
                                                                                                                                NTA
                                                                                                                             | Particle analysis |  |  
                                                                                                        | Identified molecule | Protein |  
                                                                                                        | Identification method | Mass spectrometry |  
                                                                                                        | PubMed ID | 36408942   |  
                                                                                                        | Organism | Rattus norvegicus |  
                                                                                                        | Experiment description | Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells |  
                                                                                                        | Authors | "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ." |  
                                                                                                        | Journal name | Proteomics |  
                                                                                                        | Publication year | 2023 |  
                                                                                                        | Sample | Bone marrow mesenchymal stem cells |  
                                                                                                        | Sample name | BMSC - Passage 9 |  
                                                                                                        | Isolation/purification methods | Differential centrifugation Filtration
 Ultracentrifugation
 |  
                                                                                                        | Flotation density | - |  
                                                                                                        | Molecules identified in the study | Protein |  
                                                                                                        | Methods used in the study | Western blotting Mass spectometry
 |  |  |