Do β-globin, GATA-1, or EpoR regulatory domains specifically mark erythroid progenitors in transgenic reporter mice? [1] (multiple letters)

We read with interest the article by Heinrich et al[1][1] on apparent erythroid-specific expression of green fluorescent protein (GFP) and Cre-recombinase as a result of a “knock-in” mutation into erythropoietin receptor ( EpoR ) gene. Currently, evaluation of erythroid progenitors relies on the