←Membuat halaman berisi 'In biochemistry, an '''ultratrace element''' is a chemical element that normally comprises less than one microgram per gram of a given organism (i.e. less...'
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InDalam [[biochemistrybiokimia]], an '''ultratraceunsur elementultrarenik''' isadalah aunsur chemicalkimia elementyang thatbiasanya normallykandungannya compriseskurang lessdari than onesatu [[microgrammikrogram]] per [[gram]] ofdalam aorganisme given organismtertentu (i.e.yaitu lesskurang thandari 0.,0001% by weightberat), buttapi whichyang playsmemainkan aperan significantpenting role in itsdalam [[metabolismmetabolisme]] nya.
PossibleUnsur ultratraceultrarenik elementsyang inmungkin humansterdapat includepada manusia meliputi [[boron]], [[siliconsilikon]], [[nickelnikel]], [[vanadium]]<ref>{{cite|editor=J. Mann & A. S. Truswell (editors). |title=Essentials of Human Nutrition (3rd |edition, =3rd|year=2007). |location=Oxford: |publisher=Oxford University Press}}</ref> anddan [[cobaltkobalt]].<ref>{{cite book|first1=Kazuhiro|last1=Yamada|editor=Astrid Sigel|editor2=Helmut Sigel|editor3=Roland K. O. Sigel|title=Interrelations between Essential Metal Ions and Human Diseases|series=Metal Ions in Life Sciences|volume=13|date=2013|publisher=Springer|pages=295–320|chapter=Chapter 9. Cobalt: Its Role in Health and Disease|doi=10.1007/978-94-007-7500-8_9}}</ref> OtherUnsur possibleultrarenik ultratracelain elementsyang inmungkin ada pada otherorganisme organismslain includetermasuk [[brominebrom]], [[cadmiumkadmium]], [[fluorinefluor]], [[leadtimbal]], [[lithiumlitium]], anddan [[tintimah]].<ref>{{cite|author=Nielsen, Forrest H., ''|title=Ultratrace Elements in Nutrition'', |journal=Annual Review of Nutrition|volume=4|pages=21-41|date=July 1984}}</ref>
Vol. 4: 21-41 (Volume publication date July 1984)</ref>
