Fig. 1From: The assessment of serum-mediated phagocytosis of necrotic material by polymorphonuclear leukocytes to diagnose and predict the clinical features of systemic lupus erythematosus: an observational longitudinal studyFlow cytometric analysis results. a Forward scatter analysis (FSC-A) and side scatter analysis (SSC-A) of polymorphonuclear cells (neutrophils in gate P5) in a healthy control. b Negative outcome of phagocytosis of necrotic cell material (PNC) assay in a healthy control, where only 1.7 % of gated neutrophils are positive for propidium iodide (PI) and CD66. c Positive outcome of PNC assay in a patient affected by systemic lupus erythematosus, where 38.9 % of gated neutrophils are positive for PI and CD66Back to article page