25905
Analogs from this series demonstrated potent anti - aggregatory activities against arachidonic acid - induced platelet aggregation , as measured by turbidimetric method of Born .
 Chemical: arachidonic acid
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: arachidonic acid