23683
No significant difference was observed by C3 in ferric chloride - induced arterial thrombosis in rats .
 Chemical: ferric chloride
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: ferric chloride 
Answer:
 Chemical: ferric chloride