passages.id: split_1_test_1388_passage
passages.type: progene_text
passages.text: Peripheral venous blood samples were obtained peri - operatively , and the serum concentrations of interleukin ( IL - ) 6 , IL-1 receptor antagonist ( ra ) , IL-6 soluble receptor ( sR ) C - reactive protein ( CRP ) and the percentage of peripheral neutrophils were determined .