title: Repeated nucleotide sequences in human main band DNA.
abstract: Male and female human placenta DNA was fractionated in an Ag+-Cs2SO4 density gradient. The different fractions along the gradient were analyzed by Hae III endonuclease digestion. Within the main band DNA on the light side a component having a Hae III digestion pattern similar to that of human satellite III DNA has been identified. This component which might be defined as a cryptic satellite accounts for at least 3% of the total human DNA and has a different position than human satellite III in Ag+-Cs2SO4.
mesh_terms: D001482:Base Composition; D001483:Base Sequence; D002499:Centrifugation, Density Gradient; D004262:DNA Restriction Enzymes; D004276:DNA, Satellite / Q000032:analysis*; D015252:Deoxyribonucleases, Type II Site-Specific; D005260:Female; D006801:Humans; D008297:Male; D009693:Nucleic Acid Hybridization; D010920:Placenta / Q000032:analysis*; D011247:Pregnancy; D012313:RNA / Q000032:analysis
chemical_list: D004276:DNA, Satellite; D012313:RNA; D004262:DNA Restriction Enzymes; D015252:Deoxyribonucleases, Type II Site-Specific; C024403:GGCC-specific type II deoxyribonucleases