title: Electron microscopic observations on fd bacteriophage, its alkali denaturation products and its DNA.
mesh_terms: D003090:Coliphages; D004279:DNA, Viral / Q000302:isolation & purification*; D004926:Escherichia coli; D006863:Hydrogen-Ion Concentration; D008854:Microscopy, Electron; D009905:Optical Rotatory Dispersion
chemical_list: D004279:DNA, Viral