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 ? chains to acquire reactivity with self-MHC molecules.
C
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A group of receptors form ________ tissue.
Fill in the blank(s) with the appropriate word(s).