title: Identification and characterization of dimeric and trimeric circular forms of avian sarcoma virus-specific DNA.
mesh_terms: D001355:Alpharetrovirus / Q000032:analysis*; D002499:Centrifugation, Density Gradient; D004262:DNA Restriction Enzymes / Q000494:pharmacology; D004270:DNA, Circular / Q000032:analysis* / Q000302:isolation & purification; D004279:DNA, Viral / Q000032:analysis* / Q000302:isolation & purification; D004587:Electrophoresis, Agar Gel
chemical_list: D004270:DNA, Circular; D004279:DNA, Viral; D004262:DNA Restriction Enzymes