[Spontaneous chromosome rearrangements in different kinds of rhesus monkey cells].

Spontaneous chromosome reconstructions were examined in bone marrow cells, peripheral blood lymphocytes and epithelial kidney cells from monkeys (Macaca mulatta). In normal monkeys, the chromosome reconstruction frequency was higher in epithelial kidney cells and lower in bone marrow cells. Peripheral blood lymphocytes occupied an intermediate position as regards the chromosome reconstruction frequency. The structural chromosome mutations were characterized mainly by single and twin fragments, with the former ones being predominant. The monkeys examined showed age-associated differences in the frequency of spontaneous chromosome reconstructions.