14880
In situ hybridization showed that apart from lymphocytes , thyroid cells themselves were the source of MHC II transcripts .
 ( cell type: thyroid cells, None) , ( protein: MHC II, None) , ( cell type: lymphocytes, None) , ( protein: MHC II transcripts, 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:
 ( cell type: thyroid cells, None) , ( protein: MHC II, None) , ( cell type: lymphocytes, None) , ( protein: MHC II transcripts, None) 