This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
References
Wijmenga, H. G., “Onderzoekingen over vitamin B12 en verwante factoren”, thesis, University of Utrecht (1951).
Ford, J. E., and Porter, J. W. G., Biochem. J., 51, v (1952).
Pfiffner, J. J., Calkins, D. J., Peterson, R. G., Bird, O. D., McGlohon, V., and Stipek, R. W., Amer. Chem. Soc., 120th meeting, abst. of papers, 22c (1951).
Lewis, V. J., Tappan, D. V., and Elvehjem, C. A., J. Biol. Chem., 194, 539 (1952).
Hausmann, K., Lancet, 257, 963 (1949).
Ford, J. E., and Holdsworth, E. S., paper read before the Biochemical Society, December 19, 1952, Biochem. J. (in the press).
Kunkel, H. G., and Tiselius, A., J. Gen. Physiol., 35, 89 (1951).
Abramson, H. A., Moyer, L. S., and Gorin, M. H., “Electrophoresis of Proteins”, 161 (Reinhold Pub. Corp., New York, 1942).
Ford, J. E., Brit. J. Nutrit., 6, 324 (1952).
Burkholder, P. R., Science, 114, 459 (1951).
Bessell, C. J., Harrison, E., and Lees, K. A., Chem. and Indust., 561 (1950).
Cuthbertson, W. F. J., Pegler, H. F., and Lloyd, J. T., Analyst, 76, 133 (1951).
Harrison, E., Lees, K. A., and Wood, F., Analyst, 76, 696 (1951).
Skeggs, H. R., Nepple, H. M., Valentik, K. A., Huff, J. W., and Wright, L. D., J. Biol. Chem., 184, 211 (1950).
Ford, J. E., Kon, S. K., and Porter, J. W. G., Chem. and Indust., 495 (1952).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
FORD, J., HOLDSWORTH, E., KON, S. et al. Differentiation of Vitamin B12 Active Compounds by Ionophoresis and Microbiological Assay: Occurrence of the Various Vitamin B12 Active Compounds. Nature 171, 150–151 (1953). https://doi.org/10.1038/171150a0
Issue Date:
DOI: https://doi.org/10.1038/171150a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.