Normal tissue tolerance is determined by the nuclear capture reactions that occur with normal tissue hydrogen and nitrogen.
2.
Thus, normal tissues, if they have not taken up sufficient amounts of boron-10, can be spared from the nuclear capture and fission reactions.
3.
These types of decay involve the nuclear capture of electrons or emission of electrons or positrons, and thus acts to move a nucleus toward the ratio of neutrons to protons that has the least energy for a given total number of nucleons.