labeling

4:00PM (722) An upper bound for the number of graceful labelings of a path with n edges. Sylvia R. Naples, Bard College

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.