Proline
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What links here
Ornithine
Nicotine
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Urea cycle
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Urea
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Nitrogen
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Miller–Urey experiment
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Cocaine
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Hypothetical types of biochemistry
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Alkaloid
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Amino acid
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Ornithine decarboxylase
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Essential amino acid
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Citrulline
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Arginine
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Methionine
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Putrescine
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Clam soup
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