| The region of the lesion is injected with a blue dye and radioisotope tracer. |
| But every single atom of a radioisotope advertised its presence when it decayed, since the radiation could be detected with a Geiger counter. |
| Gamma decay does not generally affect the mass and atomic number of the radioisotope. |
| Each radioisotope has a unique half-life and can be a fraction of a second or billions of years. |
| In 1934 he used a radioisotope of phosphorus to study how human tissue absorbs phosphate. |
| Even a seemingly tiny piece of radioisotope like plutonium can be emitting many millions of alpha, beta or gamma particles per week. |
