3104
A rate - decreasing dose of physostigmine , an acetylcholinesterase inhibitor , was studied in combination with the range of atropine doses .
 GENE: acetylcholinesterase
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: acetylcholinesterase 
Answer:
 GENE: acetylcholinesterase