| The chick embryos were randomly and evenly divided into control and radiation groups. The embryos were irradiated by mobile phone in the radiation group. We took sample on 5,7, 10,13,15,21 days of incubation in the radiation and control groups respectively. The results were as follows:1. Skin morphology has shown that radiation group has no obvious pathological change in earlier period of embryonic development (E5, E7, E10), but then in 13 and 15 days of incubation, part of cells arranged were loosely in radiation group by Light Microscope. However, the radiation group had no lesion changes compared with control group in 21 days of incubation.2. Compared with the control group, in 15 days of incubation, the radiation group showed disappearance of the desmosome connection among some cells in the region of skin epidermis, appearance of membranous myelin body among cells, some mitochondrions intumesce and mitochondrial crista gap increased and the number of endocytoplasmic reticulum(ER) to decrease, the integrity of the basement membrane between the epidermis and dermis, smooth muscle cells within the dermis compare with control group showed that no pathological changes. In 21 days of incubation, the radiation group showed, besides manipulus mitochondrion intumesce and flocc densification, the integrity of the desmosome connection among epidermis cells and smooth muscle cells.3. The thickness of the dermis and the subcutaneous tissue (hypodermis) was increased( P > 0.05) in radiation group.4. In 13 and 15 days of incubation, the length of feather in radiation group was shorter than control group, and significant difference on 15 days.Conclusion:The non-thermal radiation generated by MPR may cause microscopic structure and ultrastructure pathological changes in the region of skin, and the pathological changes could repaired by stem cells in skin and enhanced tolerance to microwave radiation in development of chick embryos.
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