41. Letter from Seymour S. Cohen to Joshua Lederberg Publication: Produced: 4 May 1948 Subject(s): Escherichia coliResearch Design Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
42. The Enzymic Synthesis of Amino Acyl Derivatives of Ribonucleic Acid: II. The Preparation of Leucyl-, Valyl-, Isoleucyl-, and Methionyl Ribonucleic Acid Synthetases from Escherichia coli Publication: American Society of Biological Chemists, June 1961 Subject(s): RNAEnzymesAdenosine TriphosphateEscherichia coli Archival Collection: The Paul Berg Papers (Profiles in Science)
43. The Enzymic Synthesis of Amino Acyl Derivatives of Ribonucleic Acid: III. Isolation of Amino Acid-Acceptor Ribonucleic Acids from Escherichia coli Publication: American Society of Biological Chemists, June 1961 Subject(s): RNAEnzymesEscherichia coli Archival Collection: The Paul Berg Papers (Profiles in Science)
44. Deoxyribonucleic Acid-Directed Synthesis of Ribonucleic Acid by an Enzyme from Escherichia coli Publication: National Academy of Sciences (U.S.), 1962 Subject(s): DNARNAEnzymesEscherichia coli Archival Collection: The Paul Berg Papers (Profiles in Science)
45. Biochemical Method for Inserting New Genetic Information into DNA of Simian Virus 40: Circular SV40 DNA Molecules Containing Lambda Phage Genes and the Galactose Operon of Escherichia coli Publication: National Academy of Sciences (U.S.), October 1972 Subject(s): DNAEscherichia coliEnzymesSimian virus 40 Archival Collection: The Paul Berg Papers (Profiles in Science)
46. Conservation of Short Patches of Amino Acid Sequence Amongst Proteins with a Common Function but Evolutionarily Distinct Origins: Implications for Cloning Genes and for Structure--Function Analysis Publication: IRL Press, 26 September 1988 Subject(s): DNAEnzymesAmino Acid SequenceEscherichia coliGenes Archival Collection: The Paul Berg Papers (Profiles in Science)
47. Letter from Paul Berg to Donald S. Fredrickson Publication: Produced: 17 December 1979 Subject(s): DNA, RecombinantEscherichia coli Archival Collection: The Paul Berg Papers (Profiles in Science)
48. Letter from J. Oliver Lampen, American Cyanamid Company to Joshua Lederberg Publication: Produced: 21 November 1945 Subject(s): Escherichia coliMutationResearch Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
49. Genetic Recombination in Escherichia coli: Disputation at Cold Spring Harbor, 1946-1996 Publication: Genetics Society of America, October 1996 Subject(s): Escherichia coliRecombination, Genetic Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
50. Letter from Joshua Lederberg to Edward L. Tatum Publication: Produced: 19 September 1945 Subject(s): Cell Culture TechniquesEscherichia coliGenetics, Microbial Archival Collection: The Joshua Lederberg Papers (Profiles in Science)