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Top 10 keywords and their centrality.
| Rank | Keywords | Counts | Centrality | Years |
|---|---|---|---|---|
| 1 | DNA methylation | 152 | 0.05 | 2009 |
| 2 | GBM | 115 | 0.04 | 2012 |
| 3 | Mutations | 77 | 0.02 | 2009 |
| 4 | Stem cells | 64 | 0.03 | 2011 |
| 5 | TMZ | 62 | 0.02 | 2011 |
| 6 | Proliferation | 59 | 0.02 | 2014 |
| 7 | Classification | 52 | 0.01 | 2009 |
| 8 | Differentiation | 51 | 0.07 | 2011 |
| 9 | Survival | 47 | 0.03 | 2011 |
| 10 | hypermethylation | 40 | 0.04 | 2009 |
