21355
The effective concentration of 1 - aminoanthracene required to immobilize the tadpoles was significantly increased in the presence of either microtubule stabilizing agent .
 Chemical: 1 - aminoanthracene
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: 1 - aminoanthracene 
Answer:
 Chemical: 1 - aminoanthracene