Stimulatory effect of low dose 134Cs on cells of central immunological organs

The dynamic retention of fission product 134Cs and its stimulatory effect on cells of central immunological organs such as bone marrow cells and thymus cells were investigated. The whole body retention of 1'34Cs was well described by a two-exponential function. There are tow retention components: the fast and the slow ones. The effective and biological T1/2 were 0.07 and 16.38 days, respectively. Results show that the proliferative capacity of bone marrow cells and thymus cells were excited with a low dose irradiation of 134Cs from 0.185 to 0.74 kBq/g while the cumulative absorbed dose of 134Cs was 0.91 and 4.56 cGy. It should be noted that under this condition the phenomenon of stimulatory response of cell potentiation induced by an exposure to a low dose 134Cs has been observed