| GO | Name |
| GO:0005576 | extracellular region |
| GO:0005615 | extracellular space |
| GO:0006956 | complement activation |
| GO:0006957 | complement activation, alternative pathway |
| GO:0008201 | heparin binding |
| GO:0016032 | viral process |
| GO:0030449 | regulation of complement activation |
| GO:0042802 | identical protein binding |
| GO:0043395 | heparan sulfate proteoglycan binding |
| GO:0070062 | extracellular exosome |
| GO:0072562 | blood microparticle |
| GO:1903659 | regulation of complement-dependent cytotoxicity |