24358
We developed a method to study the effects of ( 131 ) I in human thyroid tissue in culture , by which we demonstrated that ( 131 ) I induces thyroid cell apoptosis .
 Chemical: ( 131 ) I; Chemical: ( 131 ) I
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: ( 131 ) I, ( 131 ) I 
Answer:
 Chemical: ( 131 ) I; Chemical: ( 131 ) I