| 31. | Blood tests ( ammonia levels ) may assist in the diagnosis.
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| 32. | The action of ammonia is also useful in differentiating the cations.
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| 33. | The reagent consists of a solution of silver nitrate and ammonia.
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| 34. | The study focused on heterocysts, which convert nitrogen into ammonia.
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| 35. | They released a payload of barium and ammonia into the ionosphere.
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| 36. | These use electrons from the oxidation of ammonia to produce energy.
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| 37. | It is also common to test regularly for ammonia and nitrite.
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| 38. | Ammonia was added just before use to make the formula alkaline.
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| 39. | This releases ammonia, which raises the pH of the medium.
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| 40. | Ammonia is toxic in part because it affects the nervous system.
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