""The dose makes the poison"" (Latin: ''sola dosis facit venenum'') is an adage intended to indicate a basic principle of toxicology. It is credited to Paracelsus who expressed the classic toxicology maxim ""All things are poison and nothing is without poison; only the dose makes a thing not a poison.""

「都是胡扯」，四百年以來的毒物學發展，只怕陳醫師是不同意的了。陳醫師的心中，似乎有著明確的「毒物／輻射」清單，恐怖程度跟劑量無關，那怕是一點點都不能出現的。

那麼空氣中含有放射性二氧化碳，也別呼吸了吧！