14801
In addition, some IDDM sera that contain antibodies to glutamic acid decarboxylase also coprecipitate a 38,000-M(r) protein from islets.
 ( protein: antibodies, None) , ( protein: 38,000-M(r) protein, None) , ( protein: glutamic acid decarboxylase, 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: antibodies, None) , ( protein: 38,000-M(r) protein, None) , ( protein: glutamic acid decarboxylase, None) 