title: Compact form of DNA induced by spermidine.
mesh_terms: D001718:Birefringence; D003090:Coliphages; D004279:DNA, Viral; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation / Q000187:drug effects; D013095:Spermidine / Q000494:pharmacology*; D014779:Virus Replication
chemical_list: D004279:DNA, Viral; D013095:Spermidine