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thallium

Pronunciation: thal'e-um

Definition: A white metallic element, atomic no. 81, atomic wt. 204.3833; 201Tl (half-life equal to 3.038 days) is used to scan the myocardium.

[G. thallos, a green shoot (it gives a green line in the spectrum)]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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