A substance preferably deposited in bones in the human and animal body. In the case of radioactive substancesRadioactive substances within the meaning of the Atomic Ener... e.g. Sr-90 or Ra.
A substance preferably deposited in bones in the human and animal body. In the case of radioactive substancesRadioactive substances within the meaning of the Atomic Ener... e.g. Sr-90 or Ra.