title: Electron microscopy of DNA molecules isolated from T4 "petite" particles.
mesh_terms: D003090:Coliphages / Q000032:analysis*; D004277:DNA, Single-Stranded / Q000302:isolation & purification; D004279:DNA, Viral / Q000302:isolation & purification; D008854:Microscopy, Electron; D008968:Molecular Conformation
chemical_list: D004277:DNA, Single-Stranded; D004279:DNA, Viral