Which one of the following amino acids is catalyzed by activated macrophages to produce reactive

Which one of the following amino acids is catalyzed by activated macrophages to produce reactive

Q. Which one of the following amino acids is catalyzed by activated macrophages to produce reactive nitrogen species?

              (A) Arginine         (B) Asparagine             (C) Cysteine             (D) Histidine

Ans: Arginine

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