PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 24993945-1 2014 Polysialic acid (polySia) is a unique glycan modification of the neural cell adhesion molecule NCAM and a major determinant of brain development. Polysaccharides 38-44 neural cell adhesion molecule 1 Mus musculus 95-99