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Top 10 keywords in terms of frequency.
| Ranking | Keyword | Frequency | Centrality |
|---|---|---|---|
| 1 | Extracellular vesicle | 258 | 0.05 |
| 2 | Exosm | 179 | 0.12 |
| 3 | Mesenchymal stem cell | 65 | 0.05 |
| 4 | Protein | 57 | 0.11 |
| 5 | Microvesicle | 49 | 0.07 |
| 6 | Stem cell | 45 | 0.04 |
| 7 | In vitro | 40 | 0.03 |
| 8 | Microparticle | 33 | 0.04 |
| 9 | Extracellular matrix | 33 | 0.19 |
| 10 | Biomarker | 32 | 0.03 |
