Term: head reactive oxygen species
Name: head
Synonyms:
Definition: Organism subdivision which is the part of the body which consists of the cranial and pharyngeal regions.
Ontology: Anatomy Ontology [ZFA:0001114]

Name: reactive oxygen species
Synonyms: ROS
Definition: Molecules or ions formed by the incomplete one-electron reduction of oxygen. They contribute to the microbicidal activity of phagocytes, regulation of signal transduction and gene expression, and the oxidative damage to biopolymers.
Ontology: ChEBI [CHEBI:26523]  ( EBI )