Determination of Vitamin B ₁₂ with a Mutant Strain of Escherichia coli

MUTANTS OF ESCHERICHIA COLI REQUIRING METHIONINE OR VITAMIN B ₁₂

1950 • 2,926 citations

Crystalline Vitamin B ₁₂

1948 • 540 citations

Assay of Anti-Pernicious Anemia Factor with Euglena.

1949 • 137 citations

OBSERVATIONS ON THE USE OF LACTOBACILLUS LEICHMANNII 4797 IN THE MICROBIOLOGICAL ASSAY OF VITAMIN B12

1950 • 137 citations

ERYTHEIN AND APOERYTHEIN AND THEIR RELATION TO THE ANTIPERNICIOUS ANEMIA PRINCIPLE

1949 • 113 citations

Vitamin B12 Assay in Body Fluids

1950 • 96 citations

Vitamin B12: Reactions of Cyano-Cobalamin and Related Compounds

1950 • 70 citations

Studies on Euglena and Vitamin B 12

1950 • 70 citations

AN INTERRELATIONSHIP OF PURINES AND VITAMIN B12

1948 • 39 citations