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small particle
When a(n) ________ bombards a non- radioactive isotope, a radioisotope is produced artificially.
Radioactive isotopes
________ are characterized as unstable nucles (decay), alpha (a), beta (b), positron (b+), gamma (g) radiation spontaneous radiation.
Radioisotopes
________ that visit certain sites within the body are administered to the patient in nuclear medicine.
nuclei of reactants
The changes in the ________ and products are represented by a balanced nuclear equation.
Higher radiation levels
________ are used for tumor treatment or destruction.
Radiation
________ can damage the cells in the body and it is important to use the right protection: shielding, exposure time limit and distance.
Note 
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