9591
The effect of the surface heterogeneity on the in vivo biodistribution was systematically investigated through in vivo tracking of the ( 125 ) I - labeled MSMs determined by Gamma counter .
 Chemical: ( 125 ) I
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: ( 125 ) I