"cancer treatment" . . "radium-226" . . "radium" . . "²²⁶Ra" . . "Ra*" . . . . . "radium-rich water" . . . . . . "radiotherapy" . . . . . . . "radium rods" . . . . . "\u0440\u0430\u0434\u0456\u0439" . . . . . . "radium F" . "radioactive element" . . "radium's uses" . . . . "Ra" . "''rad''ium" . . "element 88" . . . . "Radium" . "radium paint" . "radium compounds" . . "Radium" . . . . . . "medical uses of radium" . "radium poisoning" .