ɹˈeɪdɪθɚ wʌz tˈeɪkən baɪ mˈaʊθ ænd ɹˈeɪdiəm, bˌiːɪŋ ɐ kˈælsiəm mˈɪmɪk, hɐz ɐ vˈɛɹi lˈɔŋ bˌaɪəlˈɑːdʒɪkəl hˈæflaɪf ɪn bˈoʊn.
Radithor was taken by mouth and radium, being a calcium mimic, has a very long biological halflife in bone.