title: Extent of variation in three related bacteriophage RNA molecules.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D001483:Base Sequence; D005075:Biological Evolution; D002848:Chromatography, DEAE-Cellulose; D003090:Coliphages / Q000032:analysis*; D003597:Cytosine Nucleotides / Q000032:analysis; D005815:Genetic Code; D014644:Genetic Variation; D011119:Polynucleotides / Q000302:isolation & purification*; D012367:RNA, Viral / Q000032:analysis*; D012260:Ribonucleases; D014500:Uracil Nucleotides / Q000032:analysis; D014764:Viral Proteins
chemical_list: D000596:Amino Acids; D003597:Cytosine Nucleotides; D011119:Polynucleotides; D012367:RNA, Viral; D014500:Uracil Nucleotides; D014764:Viral Proteins; D012260:Ribonucleases