2756
In order to test the potentiating effects of pilocarpine ( PILO ) , independent groups of rats received either a microinjection of PILO ( 40 nmol ; i . c . v . ) or vehicle , immediately before or 20 min after a sub - threshold LTD protocol ( 600 pulses , 1 Hz ; LFS600 ) .
 Chemical: pilocarpine; Chemical: PILO; Chemical: PILO
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: pilocarpine, PILO, PILO 
Answer:
 Chemical: pilocarpine; Chemical: PILO; Chemical: PILO