in both polytene and mitotic chromosomes , chromatin resistant to these endonucleases presumably includes at least three endonucleases presumably includes at least three previously unrecognized buoyant density satellites ( 1.663 , 1.670 and 1.692 g ml-1 in neutral cscl ) , and is predominantly localized in the pericentric regions of all five autosomes .
C1166688
mitotic chromosomes
C0008546
chromatin