Thymocytes That Are Not Positively Selected

Thymocytes that are not positively selected

A) undergo genetic reprogramming and differentiate into a different cell type
B) are exported to the periphery,where they are phagocytosed by macrophages
C) make up about 98% of developing thymocytes and die by apoptosis in the thymic cortex
D) are eliminated because of their reactivity with self antigens
E) try out different β chains to acquire reactivity with self-MHC molecules.