Term: pericardium reactive oxygen species
Name: pericardium
Synonyms: pericardial sac
Definition: Serous membrane that surrounds the heart.
Ontology: Anatomy Ontology [ZFA:0000054]

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 )