Prime Archives in ImmunologyUrine Monocyte Chemoattractant Protein-1 and Lupus Nephritis Disease Activity Preliminary Report of a Prospective Longitudinal StudyDownloadUrine-Monocyte-Chemoattractant-Protein-1-and-Lupus-Nephritis-Disease-Activity-Preliminary-Report-of-a-Prospective-Longitudinal-Study