A non-stop debugging environment includes a debugger configured to debug a multi-threaded debuggee. The cage includes an electrically conductive body comprising an upper wall, a lower wall, and side walls that extend from the upper wall to the lower wall. The X-shape of the rack makes the rack self-supporting. The hemostatic valve is configured to prevent blood in the blood vessel from exiting the introducer sheath assembly when the elongated sheath is located in the blood vessel. An associated method is also provided. The somatic stem cells expressing the DAZL marker are further characterized by expression of additional markers and absence of expression of certain blood markers.