Answer:
a-B
b-N
c-BT
d-BT
e-BT
Explanation:
a. epitopes may consist of non-sequential amino acids ---------> B (is only true for epitopes for BCRs)
b. epitopes are often from the interior of an antigen -------------> N (IS ONLY TRUE FOR EPITOPES FOR TCR)
c. epitopes can be present in immunogens ------------------> BT (True for both TCR and BCRs )
d. epitope binding to the antigen receptor obeys the 12/23 rule -------------> BT (True for both TCR and BCRs )
e. multiple identical epitopes may be present in a single antigen --------------> BT (True for both TCR and BCRs )