Figure 1From: Down regulation of the high-affinity IgE receptor associated with successful treatment of chronic idiopathic urticaria with omalizumabMean expression of FcεRI prior to treatment with omalizumab. Peripheral blood was collected from the patient and a normal control subject prior to the patient's first treatment with omalizumab. Total FcεRI expression was examined in whole blood by flow cytometry using dual staining with basophil cell surface markers anti-CD123 (IL-3r) and anti-FcεRI.Back to article page