labeling

A set of labels applied to the various objects in a system, to packaged goods, and so on; the act or process of applying them.

Near-synonyms: (for packaged goods) branding, trade dress

The labeling is required to include the nutrition facts itemized in 21 CFR 101.9.

The introduction of a traceable chemical group (e.g., containing an isotope or a fluorescent dye) into a protein or other biomolecule of interest so it can be tracked or quantified during experimental analysis.

There are two potential problems with this approach: first, the specificity of labeling depends on the purity of the LPS (if contaminants are present, they may be labeled also); second, removal of the label from the LPS in vivo might occur separately from processing of the LPS molecule itself.