title: [Density gradient ultracentrifugation of absolute defective lambda phage mutants].
mesh_terms: D002499:Centrifugation, Density Gradient; D003090:Coliphages; D003673:Defective Viruses; D005796:Genes / Q000032:analysis; D005827:Genetics, Microbial; D009154:Mutation; D014779:Virus Replication
vernacular_title: Etude par ultracentrifugation en gradient de densité de mutants défectifs absolus du phage lambda.