CD200 expression on early apoptotic cells was higher than on live cells. CD200 expression but not CD4 expression on early apoptotic cells was significantly higher than on live cells (annexin V-PI-) (n = 45) (median 14.5, interquartile range 8.5 to 28.7 vs. 6.30, 3.60 to 9.70; P < 0.001). PI, propidium iodide.
Li et al. Arthritis Research & Therapy 2012 14:R123 doi:10.1186/ar3853