[Chromocenters of interphase nuclei in the mouse liver contain satellite DNA].

In isolated interphase mouse liver nuclei after hypotonic treatment only the chromocenters belonging to the pericentromeric heterochromatin remain in dense form while the main mass of a chromatin is completely decondensed. The centromeric nature of these chromocenters is demonstrated by their capability for C-banding and for hybridization with a satellite mouse DNA.