| 11. | The ArsD family consists of several bacterial arsenical resistance operon trans-acting repressor ArsD proteins.
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| 12. | These organic arsenicals were in turn phased out by 2013 in all agricultural activities except cotton farming.
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| 13. | Artefacts made of arsenical bronze cover the complete spectrum of metal objects, from axes to ornaments.
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| 14. | Some of the tools in the hoard were made of arsenical bronze, or perhaps arsenical copper.
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| 15. | Some of the tools in the hoard were made of arsenical bronze, or perhaps arsenical copper.
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| 16. | In Europe, phosphorus de-oxidized non-arsenical copper is used with the designation C106.
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| 17. | The autopsy of Michael Collins declared the cause of death to be " arsenical poisoning ".
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| 18. | Indeed, it seems that arsenical bronze was the most common alloy in use in the Mediterranean basin at this time.
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| 19. | In the 19th century, inorganic arsenicals became the preeminent medicines, for instance Fowler's solution, against diverse diseases.
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| 20. | Because both of these arsenicals carried considerable risk of side effects, they were replaced for this indication by penicillin in the 1940s.
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