Tetraploidy in the epithelial cells of monkey kidneys subjected to exposure to various radiation dosages in vitro and in vivo. III

: Tetraploidy was found in 3- and 5-day cultures of monkey kidney epithelial cells irradiated with various X-ray doses at G0. At the G0 stage the portion of simple and complex tetraploid cells was determined in the monkey kidney epithelium after the whole body 60Co gamma-irradiation, 620-660 R.