| Label | Id | |
|---|---|---|
| protoporphyrinogen IX anabolism | http://purl.obolibrary.org/obo/GO_0006782 | |
| protoporphyrinogen IX biosynthesis | http://purl.obolibrary.org/obo/GO_0006782 | |
| protoporphyrinogen IX biosynthetic process | http://purl.obolibrary.org/obo/GO_0006782 | |
| protoporphyrinogen IX formation | http://purl.obolibrary.org/obo/GO_0006782 | |
| protoporphyrinogen IX synthesis | http://purl.obolibrary.org/obo/GO_0006782 |
