Spectroscopic analysis of vitamin B12 derivatives.
1980
P S Song
UI
MeSH Term
Description
Entries
D002942
Circular Dichroism
A change from planar to elliptic polarization when an initially plane-polarized light wave traverses an optically active medium. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A trace element that is a component of vitamin B12. It has the atomic symbol Co, atomic number 27, and atomic weight 58.93. It is used in nuclear weapons, alloys, and pigments. Deficiency in animals leads to anemia; its excess in humans can lead to erythrocytosis.
Cobalt-59,Cobalt 59
D013050
Spectrometry, Fluorescence
Measurement of the intensity and quality of fluorescence.
The art or process of comparing photometrically the relative intensities of the light in different parts of the spectrum.
D014805
Vitamin B 12
A cobalt-containing coordination compound produced by intestinal micro-organisms and found also in soil and water. Higher plants do not concentrate vitamin B 12 from the soil and so are a poor source of the substance as compared with animal tissues. INTRINSIC FACTOR is important for the assimilation of vitamin B 12.