Physiology DOPA and 5 – Hydroxytryptophan are clinically important because A They cross Blood Brain Barriers B They are acidic precursors of Brain amines C They act as neuromodulators D They are metabolites of various neurogenic amines 💡 Explanation DOPA and 5 - Hydroxytryptophan are clinically important because ✓ Correct Answer: A. They cross Blood Brain Barriers