Entity types via the API
The tagcat parameter specifies the entity class. Currently the following entity classes are available:
| Entity Class | Description |
| Anatomy | Entities related to anatomy, e.g. blood, neurons, etc. |
| Company | Companies |
| Country | Countries |
| Disease | Diseases |
| Spotlight | Emerging technology (click here to see the topics) |
| Event | Events like conferences |
| FinancialInstitution | Financial investors and institutions |
| IPC | International Patent Classification (using CPC codes) |
| Location | Locations, mainly names of towns and cities |
| Material | Chemical compounds, as described e.g. in PubChem |
| Organism | Entities related to organisms, e.g. bacteria, rats, Staphylococcus |
| Organization | Governmental and research institutions, universities |
| Person | Names of persons |
Entity classes can be combined with the pipe operator, e.g. tagcat=Company|Person. This is useful to analyze the relationship between entities.