Sialic acid as a tumor marker.

@article{Narayanan1994SialicAA,
  title={Sialic acid as a tumor marker.},
  author={Sheshadri Narayanan},
  journal={Annals of clinical and laboratory science},
  year={1994},
  volume={24 4},
  pages={
          376-84
        }
}
The term sialic acid is used to describe derivatives of neuraminic acid, where the amino group of neuraminic acid is substituted by either an acetyl or glycolyl group. The unique structural features of the molecule, which includes a negative charge owing to a carboxyl group, enables it to play a role in cellular functions, such as transport of positively charged compounds, cell-to-cell repulsion, influencing conformation of glycoproteins on cell membranes, and even masking antigenic… CONTINUE READING
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