Samarium-153 is an isotope of samarium.
It is used in samarium (153Sm) lexidronam.
It is treated by the body in a similar manner to calcium, and it localizes selectively to bone.
In creative works
In the television crime drama Law and Order Criminal Intent, a murder victim is poisoned by ingesting three vials of samarium-153. 
- Ballantyne, Jane C; Fishman, Scott M; Rathmell, James P. (2009-10-01). Bonica's Management of Pain. Lippincott Williams & Wilkins. pp. 655–. ISBN 978-0-7817-6827-6. Retrieved 19 July 2011.
- "E5408 - Inert Dwarf". Law & Order Criminal Intent (2001) Episode Scripts. Springfield Springfield. Retrieved 9 August 2015.
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