Relationship between urinary TNF-α and RANTES excretion Relationship between urinary TNF-α and RANTES excretion. □, Determinations during periods when the patients were not receiving MMF (pre- and posttreatment periods); ▪, determinations during MMF treatment. Relationship between urinary TNF-α and RANTES excretion. □, Determinations during periods when the patients were not receiving MMF (pre- and posttreatment periods); ▪, determinations during MMF treatment. Jose Herrera et al. JASN 2006;17:S218-S225 ©2006 by American Society of Nephrology