title: The inability of T-even phages to produce heat-stable density mutants and its bearing on chromosome maturation.
mesh_terms: D001483:Base Sequence; D002499:Centrifugation, Density Gradient; D002586:Cesium; D002712:Chlorides; D003090:Coliphages / Q000032:analysis / Q000254:growth & development* / Q000302:isolation & purification; D004279:DNA, Viral / Q000032:analysis; D004926:Escherichia coli; D005827:Genetics, Microbial; D006358:Hot Temperature; D008242:Lysogeny; D008970:Molecular Weight; D009154:Mutation; D009995:Osmosis; D013395:Sucrose
chemical_list: D002712:Chlorides; D004279:DNA, Viral; D002586:Cesium; D013395:Sucrose