Physical studies of glycerol protection against x-ray inactivation of bacteriophage.
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Bacteriophages↗
Biomedical subjects
D Freifelder
Publications and source records attributed to D Freifelder.
Single-strand breaks in bacterial DNA associated with thymine starvation.
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Centrifugation, Zonal↗
Rate of production of single-strand breaks in DNA by x-irradiation in situ.
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Cell Survival↗
Studies on Escherichia coli sex factors. IV. Molecular weights of the DNA of several F' elements.
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Alkalies↗
Studies on Escherichia coli sex factors. 3. Covalently closed F'Lac DNA molecules.
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Centrifugation, Density Gradient↗
Studies on Escherichia coli sex factors. I. Specific labeling of F'Lac DNA.
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Agar↗
Studies on Escherichia coli sex factors. II. Some physical properties of F'Lac and F DNA.
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Bacteriolysis↗
Physicochemical studies on x-ray inactivation of bacteriophage.
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Adenine↗
Studies with Escherichia coli sex factors.
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Centrifugation, Density Gradient↗
Sedimentation analysis of neutralized alkali-denatured DNA.
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Alkalies↗
Lack of a relation between deoxyribonucleic acid methylation and thymineless death in Escherichia coli.
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Alkylation↗
Role for the female in bacterial conjugation in Escherichia coli.
Hfr and F' Lac male strains of Escherichia coli were mated with purine-requiring females which had been starved for purine. These females formed mating pairs with the males. However, a mating in the absence of purine markedly reduced the yield of recombinants. Transfer of F' Lac or of lambda prophage also occurred infrequently. It was concluded that deoxyribonucleic acid transfer from male to female requires some, as yet unknown, function of the female.
Carbon Isotopes↗
Replication of DNA during F'Lac transfer.
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DNA, Bacterial↗
Mechanism of x-ray sensitization of bacteriophage T7 by 5-bromouracil.
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Coliphages↗
Inactivation of phage alpha by single-strand breakage.
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Bacillus megaterium↗
Acridine orange- and methylene blue-sensitized induction of Escherichia coli lysogenic for phage lambda.
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Acridines↗
Effect of NaCIO-4 on bacteriophage: release of DNA and evidence for population heterogeneity.
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Bacteriophages↗
Lability of single-stranded deoxyribonucleic acid to hydrodynamic shear.
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Chemical Phenomena↗