title: Cyanophage S-2L contains DNA with 2,6-diaminopurine substituted for adenine.
mesh_terms: D015075:2-Aminopurine / Q000031:analogs & derivatives* / Q000032:analysis; D000225:Adenine / Q000031:analogs & derivatives*; D001435:Bacteriophages / Q000032:analysis* / Q000254:growth & development / Q000648:ultrastructure; D002499:Centrifugation, Density Gradient; D004279:DNA, Viral / Q000032:analysis*; D009690:Nucleic Acid Conformation; D009691:Nucleic Acid Denaturation
chemical_list: D004279:DNA, Viral; D015075:2-Aminopurine; D000225:Adenine