Radioactive Tracers
Until the early years of the twentieth century, there was no way to observe the functions of a living organism without surgery. Then came the invention of the x-ray machine, the fi...
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Radiotracer
A radioactive isotope progressing through a biological or physical system can be followed by several tracking procedures. For example, fertilizer containing radioactive phosphorus can be a...
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Radioactive Tracers
Radiotracer