Abstract

The genotoxic effects of exposure to ionizing radiation during the early stages of human embryonic development can be fatal. Despite this, the radiosensitivity of human embryonic and differentiated extraembryonic cells is poorly studied. In this work, the efficiency of a DNA double-strand break repair in human extraembryonic fibroblasts was investigated. It was shown that the repair of radiation-induced DNA damage in human extraembryonic fibroblasts is likely to reflect the ability of these cells to repair spontaneous DNA double-strand breaks.

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