Cell Component
euchromatin Audio
eu·chro·ma·tin [ yoo-kroh-muh-tin ]
Subclass of:
Chromatin
Definitions related to euchromatin:
  • Chromosome regions that are loosely packaged and more accessible to RNA polymerases than HETEROCHROMATIN. These regions also stain differentially in CHROMOSOME BANDING preparations.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • Euchromatin. The parts of chromosomes that, during interphase, are uncoiled dispersed threads and not stained by ordinary dyes; metabolically active, in contrast to the inert heterochromatin.
    NCI
    U.S. National Cancer Institute, 2021
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