Fig. 1From: Standard protocol for the PIGRET assay, a high-throughput reticulocyte Pig-a assay with an immunomagnetic separation, used in the interlaboratory trial organized by the Mammalian Mutagenicity Study Group of the Japanese Environmental Mutagen and Genome SocietyOutline of the PIGRET assay procedure. First, stain RBCs with PE-conjugated anti-CD71 Abs and mixed with anti-PE magnet particles. Enrich CD71 positive reticulocytes using cell separation magnet(s) by a positive selection method. Next, stain the enriched RETs with APC-conjugated anti-HIS49 Ab and FITC-conjugated anti-CD59 Ab. Finally, using FCM, CD71 and HIS49 double-positive cells are analyzed for CD59 expression, and Pig-a mutant cells are detected as the FITC-negative populationBack to article page