| | The organism represented by a subject in the 'single organism' granularity category |
| | Any organism identified as a host for a subject assigned to the 'symbiont system', 'host-pathogen sy... |
| | An organism identified as a symbiont within a subject assigned to the 'symbiont system' granularity ... |
| | A synthetic biological entity |
| | A constituent taxon of either (a) a subject assigned to the 'environmental microbiome' granularity c... |
| | A taxon identified as a source organism for a subject assigned to the 'cell line' granularity catego... |
| | An organism identified as a pathogen symbiont in a subject assigned to the 'host-pathogen system' gr... |
| | A biological environment used to produce gene products not native to it: for example, E. coli used t... |