Term: forebrain heterochromatin
Name: forebrain
Synonyms: prosencephalon
Definition: The most anterior region the brain including both the telencephalon and diencephalon.
Ontology: Anatomy Ontology [ZFA:0000109]

Name: heterochromatin
Synonyms: nuclear heterochromatin, transcriptionally inactive chromatin, transcriptionally silent chromatin
Definition: A compact and highly condensed form of chromatin that is refractory to transcription.
Ontology: GO: Cellular Component [GO:0000792]    QuickGO    AmiGO