Endonuclease-I-deficient and ribonuclease I-deficient Escherichia coli mutants.

Animals Bacteriological Techniques Cell Nucleus/enzymology Crosses, Genetic Culture Media DNA/analysis Deoxyribonucleases/analysis Escherichia coli/drug effects,enzymology Fishes Genetics, Microbial Magnesium/pharmacology Male Methods Mutation Ribonucleases/analysis Spermatozoa/analysis Toluene/pharmacology Viscosity

Culture Media Toluene DNA Deoxyribonucleases Ribonucleases Magnesium