ra·dio·im·mu·no·as·say /ˌrediˌoɪmjənoˈæˌse, ɪˌmju, æˈse/
  放射免疫測定
  ra·dio·im·mu·no·as·say /ˌredɪoˌɪmjənoˈæsˌe, ɪmˌju, æˈse/ 名詞
  放射免疫測定法,放射免疾分析法
  radioimmunoassay
       n : immunoassay of a substance that has been radioactively
           labeled