21.   Raskin conducted early tests of ways to exploit this mechanism to sop up radioactive substances and heavy metals.

22.   The antibodies could then be loaded with toxins or radioactive substances that would destroy the cells.

23.   The boron absorbs some of the neutrons, forming a radioactive substance that quickly decays.

24.   The experiments ranged from marching soldiers through nuclear explosion sites without informing them of the risks to injecting people with radioactive substances, again without their knowledge.

25.   The more natural vitamin D already occupying the sites, the less the radioactive substance can bind.

26.   The noise in question consists mainly of radiation produced by uranium, thorium, and other radioactive substances in the ground.

27.   The radiation in question includes subatomic particles or energy waves, emitted by radioactive substances.

28.   The uranium, which is not highly radioactive, could be converted into a form useful for wrapping highly radioactive substances like reactor waste.

29.   Potassium iodide would be helpful only if a dirty bomb used radioactive iodine instead of other radioactive substances, and then only for people close to the explosion.

30.   Prosecutors have charged Albuquerque with illegally handling and releasing radioactive substances, as well as causing bodily harm.