iron-59
noun
: a heavy radioisotope of iron that has a mass number of 59 and a half-life of 45.1 days, emits beta particles and gamma rays, and is used as a tracer in the study of iron metabolism
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“Iron-59.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/iron-59. Accessed 23 Apr. 2024.
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