阿摩線上測驗
72. Which amino acid has an indole ring?
(A) Proline
(B) Asparagine
(C) Lysine
(D) Tryptophan
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統計： A(0), B(0), C(0), D(2), E(0) #3077689
統計： A(0), B(0), C(0), D(2), E(0) #3077689
