Unlike the C regions of immunoglobulin heavy-chain loci, the C regions of the T-cell receptor ?-chain loci
a. are functionally similar
b. do not contain D segments
c. are more numerous
d. are encoded on a different chromosome from the variable ?-chain gene segments of the T-cell receptor
e. do not encode a transmembrane region
f. possess non-templated P and N nucleotides.
A
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