8651
In contrast , the contractile action of arachidonic acid , via a presumed cyclooxygenase product that mediated the contractions caused by both TF and EGF , was not blocked by any of the signal pathway probe inhibitors .
 cyclooxygenase, TF, EGF
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 cyclooxygenase, TF, EGF