Association of chromatin fibers with the annuli of the nuclear membrane.
D000818:Animals; D001717:Birds; D002467:Cell Nucleus; D002875:Chromosomes; D006224:Cricetinae; D046508:Culture Techniques; D006801:Humans; D007739:L Cells; D008297:Male; D008540:Meiosis; D051379:Mice; D008854:Microscopy, Electron; D008938:Mitosis; D013737:Testis