NCIt definition : A DNA packaging complex comprised of approximately 200 base pairs of DNA wound around
a protein core, which is formed by an octomer of histones. The histone octomer includes
two dimers of histones H2A and H2B that surround a tetramer consisting of two molecules
of histone H3 and two molecules of histone H4.;
Alternative definition : CDISC: Antigen(s) of DNA packaging complexes comprising of a strand of DNA winding
around a protein core and an octamer of histones. They can be considered as autoantigens
and are commonly and mainly associated with the autoimmune disease systemic lupus
erythematosus.;