0 a B vitamin (= one of a group of natural substances necessary for good health) found in foods such as eggs, liver (= an animal organ), and yeast (= a fungus that makes bread rise). It helps the body use fats and carbohydrates and is important for healthy hair, nails, and skin: --
Before use, the labeled probes were precipitated with ethanol, then washed to remove unincorporated biotin-labeled nucleotides.
In contrast, quantities of high molecular weight, biotin-labelled surface proteins increased with greater centrifugal force, indicating labelling of otherwise inaccessible residues.
In this case the limiting factor is the low surface density of the biotin ligands.
The profiles revealed that the individual spots bound to one or both biotin derivatives.
Recently a number of biotin derivatives have become commercially available, and they have various different binding characteristics.
The dark stained parts indicate the biotin-streptavidin complex.
In this system, the 5h-end of an oligonucleotide linked to biotin was used as the primer in the sequencing reaction.
It is assumed that much smaller biotin-derivatized molecules can easily collect together at this density.
