[Regularities in forming chromosome aberrations in cattle lymphocytes in external and combined radiation exposure]

Aberrations in lymphocytes of cattle blood exposed to gamma-radiation and combined radiation were found. It was shown that seven days after the exposure to doses from 64.5 to 103.3 mC/kg a number of aberration varied in the range from 16.1 to 37.7 per 100 cells, whereas a frequency of aberrated cells was from 13.5 to 29.8. After the exposure to 77.3 mC/h and the following inclusion of fused radioactive particles into the fodder (48.1-762.2 Mbq/kg of the live weight), the number of aberrations increased from 25.5 up to 55.0 per 100 cells and the number of aberrated cells increased from 21 up to 43%.