FACS analysis of erythropoiesis in R62W transgenic mice. (Left) Analysis of Lin⁻ bone marrow cells (top) Lin⁻ spleen cells (center) and fetal liver cells (bottom), stained with antibodies against CD71 and Ter119. (Right) Analysis Lin⁻ bone marrow (top) and Lin⁻ spleen cells (center) stained with antibiodies against CD44 and Ter119. (Bottom right) Gates used for sorting. Cells from mice carrying the RPS19R62W transgene alone = RPS19R62W; cells from mice carrying the RPS19R62W transgene and the Prion-Cre transgene = RPS19R62W; Cre.