574
Six to 8 weeks after subtotal thyroidectomy , the number of patients ' PBMC responding to any peptide and the average number of recognized peptides decreased.
 ( cell type: PBMC, 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: PBMC, None) 