![Figure 3 from Microbiological assay for vitamin B12 with use of a colistin-sulfate-resistant organism. | Semantic Scholar Figure 3 from Microbiological assay for vitamin B12 with use of a colistin-sulfate-resistant organism. | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/e93ae934c933a631faa446ea45734839298dbf73/2-Figure3-1.png)
Figure 3 from Microbiological assay for vitamin B12 with use of a colistin-sulfate-resistant organism. | Semantic Scholar
![The Microbiological Assay of 'Vitamin B12' in the Milk of Different Animal Species* | British Journal of Nutrition | Cambridge Core The Microbiological Assay of 'Vitamin B12' in the Milk of Different Animal Species* | British Journal of Nutrition | Cambridge Core](https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0007114554000529/resource/name/firstPage-S0007114554000529a.jpg)
The Microbiological Assay of 'Vitamin B12' in the Milk of Different Animal Species* | British Journal of Nutrition | Cambridge Core
The assay of vitamin B12. Experiences with the microbiological assay of vitamin B12 in an analytical and consulting laboratory - Analyst (RSC Publishing)
![Vitamin B12: Microbiological Assay Methods and Distribution in Selected Foods (Classic Reprint): Harold Lichtenstein: 9780331363111: Amazon.com: Books Vitamin B12: Microbiological Assay Methods and Distribution in Selected Foods (Classic Reprint): Harold Lichtenstein: 9780331363111: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/41sbyHORu9L._SX321_BO1,204,203,200_.jpg)
Vitamin B12: Microbiological Assay Methods and Distribution in Selected Foods (Classic Reprint): Harold Lichtenstein: 9780331363111: Amazon.com: Books
![Table 2 from A differential microbiological assay for vitamin B12 and pseudovitamin B12. | Semantic Scholar Table 2 from A differential microbiological assay for vitamin B12 and pseudovitamin B12. | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/fe60eb0518ee7925d10dc88e66e3a3df5326378f/3-Table2-1.png)
Table 2 from A differential microbiological assay for vitamin B12 and pseudovitamin B12. | Semantic Scholar
The assay of vitamin B12. Part VI. Microbiological estimation with a mutant of Escherichia coli by the plate method - Analyst (RSC Publishing)
The assay of vitamin B12. Part III. Microbiological estimation with Lactobacillus lactis Dorner by the plate method - Analyst (RSC Publishing)
![PDF] Microbiological assay of vitamin B12 with a mutant strain of Escherichia coli. | Semantic Scholar PDF] Microbiological assay of vitamin B12 with a mutant strain of Escherichia coli. | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/abf94b813e700e527f18157411ccd617b44b2a18/2-Figure1-1.png)
PDF] Microbiological assay of vitamin B12 with a mutant strain of Escherichia coli. | Semantic Scholar
![The Microbiological Assay of 'Vitamin B12'. The Specificity of the Requirement of Ochromonas malhamensis for Cyanocobalamin | British Journal of Nutrition | Cambridge Core The Microbiological Assay of 'Vitamin B12'. The Specificity of the Requirement of Ochromonas malhamensis for Cyanocobalamin | British Journal of Nutrition | Cambridge Core](https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0007114553000407/resource/name/firstPage-S0007114553000407a.jpg)
The Microbiological Assay of 'Vitamin B12'. The Specificity of the Requirement of Ochromonas malhamensis for Cyanocobalamin | British Journal of Nutrition | Cambridge Core
![Microbiological Assay of Vitamin B12 with a Mutant Strain of Escherichia coli | Applied Microbiology Microbiological Assay of Vitamin B12 with a Mutant Strain of Escherichia coli | Applied Microbiology](https://journals.asm.org/cms/10.1128/am.1.1.42-46.1953/asset/ff9dbd87-d697-46b9-b3f4-26deb806942f/assets/am.1.1.42-46.1953.fp.png)