oleh Pratiwi, A.D.; Department of Biology, Faculty of Mathematics and Sciences, Semarang State University, Kampus Sekaran, Gunungpati, Semarang 50229, Indonesia , Basri, I.K.H.; Center for Radiation Safety Technology and Metrology, National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Jakarta 12440, Indonesia , Purnami, S.; Center for Radiation Safety Technology and Metrology, National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Jakarta 12440, Indonesia , Syaifudin, M.; Center for Radiation Safety Technology and Metrology, National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Jakarta 12440, Indonesia , Tetriana, D.; Center for Radiation Safety Technology and Metrology, National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Jakarta 12440, Indonesia , Yusuf, D.; Center for Radiation Safety Technology and Metrology, National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Jakarta 12440, Indonesia , Rahardjo, T.; Center for Radiation Safety Technology and Metrology, National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Jakarta 12440, Indonesia , Nurhayati, S.; Center for Radiation Safety Technology and Metrology, National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Jakarta 12440, Indonesia , Rahajeng, N.; Center for Radiation Safety Technology and Metrology, National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Jakarta 12440, Indonesia , Anggraito, Y.U.; Center for Radiation Safety Technology and Metrology, National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Jakarta 12440, Indonesia , Kashiwakura, I.; Hirosaki University Graduate School of Health Sciences, Department of Radiological Life Sciences 66-1 Hon-cho, Hirosaki, 036-856, Japan