Antiviral polysaccharides can, therefore, be very efficient against viral, and other pathogenic, infections if appropriate polysaccharide moieties can be exploited for protein recognition. Through recognition of the pathogen mucopolysaccharides, or glycosaminoglycans (GAG), have significant potential to explore drug leads. GAG is expressed ubiquitously throughout the body on cell surfaces as well as in the extracellular space between cells. An interesting property of these polysaccharides is that they are very diverse in their structure and also not monodisperse, precisely defined molecules. Various enzymes are capable of modifying these polysaccharides at various bodily sites to perform a particular function [53].