494
All the markers considered were sufficiently sensitive, but among them, Platelet Factor IV was the most reliable to the hormonal ovulatory situation .
 ( protein: Platelet Factor IV, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: Platelet Factor IV, None) 