29154
Posttranslational modification of the neural cell adhesion molecule ( NCAM ) by polysialic acid ( polySia ) is well studied in the nervous system and described as a dynamic modulator of plastic processes like precursor cell migration , axon fasciculation , and synaptic plasticity .
 Chemical: polysialic acid; 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: polysialic acid, polySia 
Answer:
 Chemical: polysialic acid; Chemical: polySia