8782
Serial sectioning of 6 micrometer was performed using a cryostat, and samples were immunohistochemically stained using the streptoavidin -biotin peroxidase method and a monoclonal antibody against c-fos.
 ( protein: -biotin peroxidase, None) , ( protein: streptoavidin, 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: -biotin peroxidase, None) , ( protein: streptoavidin, None) 