Only in-vivo neutron activation analysis (IVNAA) provides non-destructive testing of total body levels of the major body elements: calcium, sodium, chlorine, phosphorus, nitrogen, hydrogen, oxygen, ...
Iodine-131 Used to treat thyroid gland (in the ... Carbon-14 is formed when neutrons from cosmic radiation collide with nitrogen atoms in our atmosphere forming protons and carbon-14 atoms.
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