3159
Kainate receptors ( KARs ) , a family of ionotropic glutamate receptors , are widely expressed in the central nervous system and are critically involved in synaptic transmission .
 Chemical: Kainate; Chemical: glutamate
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Kainate; Chemical: glutamate