3925
Native PTF beta , in either protein fractions or a PTF-Oct-1-DNA complex , can be recognized by polyclonal antibodies raised against recombinant PTF beta .
 ( protein: polyclonal antibodies, None) , ( protein: PTF beta, None) , ( protein: recombinant PTF beta, None) , ( protein: PTF-Oct-1-DNA complex, None) , ( protein: PTF beta, 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: polyclonal antibodies, None) , ( protein: PTF beta, None) , ( protein: recombinant PTF beta, None) , ( protein: PTF-Oct-1-DNA complex, None) , ( protein: PTF beta, None) 