THYMIC EMIGRATION - CONVEYOR BELTS OR LUCKY DIPS

The thymic medulla has always seemed a rather uncomplicated compartmen t, simply storing mature thymocytes until they are exported to the per ipheral lymphoid organs. However, as discussed here by Roland Scollay and Dale Godfrey, a careful look at recent data suggests that events i n the medulla may be more complex and protracted than previously thoug ht.