Source:http://linkedlifedata.com/resource/umls/id/C0059882
MSH: Chromosome regions that are loosely packaged and more accessible to RNA polymerases than HETEROCHROMATIN. These regions also stain differentially in CHROMOSOME BANDING preparations.,NCI: 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.