23552
We had previously reported a fluorescein conjugate that was shown ( by confocal microscopy imaging of DS - red - labelled cortical neurons ) to bind specifically to GluN2B .
 Chemical: fluorescein
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: fluorescein 
Answer:
 Chemical: fluorescein