title: Covalently closed circular DNA of avian sarcoma virus: purification from nuclei of infected quail tumor cells and measurement by electron microscopy and gel electrophoresis.
mesh_terms: D001355:Alpharetrovirus / Q000378:metabolism*; D000818:Animals; D002460:Cell Line; D002467:Cell Nucleus / Q000378:metabolism; D003593:Cytoplasm / Q000378:metabolism; D004261:DNA Replication; D004270:DNA, Circular / Q000096:biosynthesis*; D004279:DNA, Viral / Q000096:biosynthesis; D004587:Electrophoresis, Agar Gel; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation; D009691:Nucleic Acid Denaturation; D009693:Nucleic Acid Hybridization; D009695:Nucleic Acid Renaturation; D011784:Quail; D014779:Virus Replication
chemical_list: D004270:DNA, Circular; D004279:DNA, Viral