baɪ kəntɹˈoʊlɪŋ ɛkspˈoʊʒɚ tə ðə dˈɔːɾɚz ðə ɹˌeɪdɪoʊˈæktɪv dˈoʊs tə ðə skˈɪn ænd lˈʌŋz kæn biː ɹᵻdˈuːst baɪ æt lˈiːst nˈaɪnti pɚsˈɛnt.
By controlling exposure to the daughters the radioactive dose to the skin and lungs can be reduced by at least 90%.