Irradiation to a tissue creates response to both irradiated and non-irridiated cells. Ionizing radiation deposits energy in the matter being irradiated. The waste stream is irradiated with Ultraviolet radiation. Through absorbing ambient radiation the armor is able to decontaminate irradiated areas. The 7-dehydrocholesterol is then irradiated with ultraviolet light. McClintock observed the breakage and fusion of chromosomes in irradiated maize cells. Irradiated food does not become radioactive. These cells were later irradiated and injected back into the patient. In this approach, the sample is irradiated sequentially with various single wavelengths. If not, they are irradiated by high-energy particles and annealed. Vaccination with irradiated cancer cells has not proven successful. Foods are often irradiated to kill harmful pathogens. Then they irradiated the area with near-infrared laser light. Thermal tides caused by unevenly irradiated surfaces are another factor. Hydroxamic acids have also been investigated for reprocessing of irradiated fuel.