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chromium(Cr)
(kro´me-әm)
a chemical element, atomic number 24, atomic weight 51.996. It is an essential dietary trace element, but hexavalent chromium
is carcinogenic.
chromium 51
a radioactive isotope of chromium having a half-life of 27.7 days and decaying by electron capture, emitting gamma rays. It
is used to label red blood cells for measurement of red cell mass or volume, survival time, and sequestration studies, and
for the diagnosis of gastrointestinal bleeding, and is used to label platelets to study their survival. Symbol 51Cr.

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