| The ancient history of the structure of ribonuclease P and the early origins of Archaea Recent countries visiting this post |  |
 | 2 | United States |
 | 1 | |
 | 1 | Russian Federation |
| The ancient history of the structure of ribonuclease P and the early origins of Archaea Recent countries visiting this post | |
| 2 | United States |
| 1 | |
| 1 | Russian Federation |