TNF and chronic kidney disease: NO and TNF-α release were not significantly influenced in C6 cells treated with sera from human healthy people (H1-H4; Figure 2A,D), but resulted increased in the cells treated with sera from CKD patients (CKD1–CKD8; Figure 2B,E) and of CKD dialysed patients (HD1–HD6; Figure 2C,F) in inflammatory conditions.