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For the study of the changes in plasma interleukin-1 ( IL-1 ) and their possible relationship with the changes in glucocorticoid receptor ( GR ), plasma IL-1 and GR in peripheral blood leukocytes in aged long-distance runner were measured simultaneously.
 cell type: peripheral blood leukocytes; protein: plasma interleukin-1; protein: IL-1; protein: GR; protein: plasma IL-1; protein: glucocorticoid receptor; protein: GR; protein: IL-1
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 cell type: peripheral blood leukocytes; protein: plasma interleukin-1; protein: IL-1; protein: GR; protein: plasma IL-1; protein: glucocorticoid receptor; protein: GR; protein: IL-1