29156
In mature lung tissue of healthy donors , polySia was exclusively attached to the transmembrane isoform NCAM - 140 and located to intracellular compartments of epithelial cells .
 Chemical: polySia
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: polySia 
Answer:
 Chemical: polySia