Another type can be isolated from the inner cell mass of a blastocyst.
One type of these cells form cobblestone areas when plated on a feeder layer, while another type can be sorted using the marker STRO-1 and is isolated from the stromal vascular fraction. Reynolds and Weiss isolated another population of these cells from the subventricular zone, which form a characteristic spherical shape in vitro. John Dick proposed a subpopulation of these cells that exist within tumors, which, if not killed, will lead to (*) recurrence of the tumor. One variety of these cells, whose subtypes include mesenchymal and hematopoietic, can be artificially created by transfecting Klf4 and Sox2. Another type can be isolated from the inner cell mass of a blastocyst. For 10 points, name this general category of undifferentiated cells, whose embryonic variety can be induced to differentiate into any cell type.
One type of these cells form cobblestone areas when plated on a feeder layer, while another type can be sorted using the marker STRO-1 and is isolated from the stromal vascular fraction.
stem cells [accept more specific answers such as "embryonic stem cells" as "ES" or "induced pluripotent stem cells" as "iPS cells"]