develops from has low plasma membrane amount DN2 thymocyte DN2a thymocyte DN2b thymocyte 2010-10-21T10:12:08Z A DN2 thymocyte that is Kit-low. Observed in mice. There is growing evidence that molecular markers characterizing double negative thymocytes are different across species, especially in mouse versus human thymus. If in doubt, please consider using CL:0002489 'double negative thymocyte'. mast/stem cell growth factor receptor