| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| when was stem cell research discovered | 1.94 | 0.6 | 1224 | 33 | 38 |
| when | 1.01 | 1 | 431 | 53 | 4 |
| was | 0.06 | 0.9 | 5865 | 27 | 3 |
| stem | 1.31 | 0.6 | 2903 | 79 | 4 |
| cell | 0.14 | 0.8 | 9690 | 70 | 4 |
| research | 0.02 | 0.5 | 7964 | 80 | 8 |
| discovered | 1.38 | 0.2 | 5623 | 94 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| when was stem cell research discovered | 0.31 | 1 | 5994 | 77 |
| who discovered stem cell research | 1.85 | 1 | 5223 | 37 |
| history stem cell research | 0.11 | 1 | 5680 | 33 |
| who started stem cell research | 0.51 | 0.6 | 9846 | 58 |
| who first discovered stem cells | 1.34 | 0.1 | 4907 | 82 |
| where were stem cells discovered | 0.78 | 0.7 | 381 | 88 |
| first stem cell research | 1.12 | 0.3 | 6531 | 49 |
| recent stem cell research discoveries | 1.94 | 0.5 | 5708 | 56 |
| article on stem cell research history | 0.58 | 0.5 | 7258 | 90 |
| history of stem cell research timeline | 0.99 | 0.7 | 401 | 36 |
| history of stem cell | 1.56 | 0.3 | 8545 | 49 |
| who found stem cells | 1.1 | 0.1 | 3691 | 91 |
