| Species | RefIntense Num | Refseq Num | Source |
|---|---|---|---|
| Brevibacterium linens | 1 | 7 | HMP |
| Brevibacterium senegalense | 1 | 2 | MGYG |
| Brucella ceti | 2 | 9 | HMP |
| Brucella melitensis | 2 | 355 | HMP |
| Buchnera aphidicola | 4 | 69 | HMP |
| Burkholderia ambifaria | 3 | 85 | HMP |
| Burkholderia cenocepacia | 1 | 479 | HMP |
| Burkholderia dolosa | 1 | 26 | HMP |
| Burkholderia mallei | 1 | 99 | HMP |
| Burkholderia oklahomensis | 1 | 11 | HMP |