why is deinococcus radiodurans so resistant to ionizing radiation?
440435
radiodurans is resistant to ionizing radiation because it has the capacity to repair the DNA damage introduced during dehydration.
233381
Gamma irradiation is a physical/chemical means of sterilization, because it kills bacteria by breaking down bacterial DNA, inhibiting bacterial division. Energy of gamma rays passes through the equipment, disrupting the pathogens that cause contamination.
391910
Because they consist of charged particles, alpha and beta radiation can also be deflected by magnetic fields . Just as with electric fields, gamma radiation is not deflected by magnetic fields.
1315010
Because the levels of naturally occurring radioactivity vary in the materials used in negative ion technology, products containing these materials will emit differing levels of radiation. As with all consumer products, it is important for the public to be informed before they buy.
808716
Gamma radiation is the type of radiation used to sterilize medical equipment. Gamma rays are ionizing radiation. Therefore can kill all the bacteria.
17959
KI (potassium iodide) is a salt of stable (not radioactive) iodine that can help block radioactive iodine from being absorbed by the thyroid gland, thus protecting this gland from radiation injury. The thyroid gland is the part of the body that is most sensitive to radioactive iodine.
486073
Why are gram-positive bacteria typically more resistant than gram-negative bacteria to antibiotics that disrupt plasma membranes, such as polymyxin B? Gram-Positive Bacteria has a cell wall composed of a thick layer of peptidologlycan containing teichoic and lipoteichoic acid complexed to the peptidoglycan.
32891
A Sun Chlorella is not affected by radiation from Fukushima. Our chlorella is actually grown in Taiwan, but our final manufacturing processes take place in Japan. The factory is 325 miles from Fukushima, and the product and local environment are regularly checked for radiation.
609661
The FDA requires that irradiated foods bear the international symbol for irradiation. Look for the Radura symbol along with the statement “Treated with radiation” or “Treated by irradiation” on the food label. ... The FDA does not require that individual ingredients in multi-ingredient foods (e.g., spices) be labeled.
453159
Babies don't recognise that their environment is not part of them and, as highly sensitive organisms, they are totally unprotected against radiation. The only certainty for them is the emotional contact and the close proximity of a parent or carer; sadly, technology is disturbing this delicate balance, and their lives.
803788
The NTP has classified x- and gamma radiation as “known to be a human carcinogen.” The US Environmental Protection Agency (EPA) sets limits for exposure to x-rays and gamma rays in part because it recognizes that this form of radiation can cause cancer.
452296
When ionizing radiation causes DNA damage (mutations) in male or female reproductive (“germ”) cells, that damage can be transmitted to the next generation (F1). This is in contrast to mutations in somatic cells, which are not transmitted. Detection of human germ cell mutations is difficult, especially at low doses.
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Most bacteria have one or two circular chromosomes.
3727
The gamma irradiation process uses Cobalt 60 radiation to kill microorganisms on a variety of different products in a specially designed cell. Gamma radiation is generated by the decay of the radioisotope Cobalt 60, with the resultant high energy photons being an effective sterilant.
808561
The primary reason cockroaches and many types of insects are so resistant to ionizing radiation is that their cells don't divide that much between molting cycles. Cells are most susceptible to damage by ionizing radiation when they are dividing.
1274582
The spinal cord and cauda equina are the critical dose-limiting structures in the treatment of primary tumors involving the spinal cord. The cauda equina, consisting of peripheral nerve, is probably more resistant to radiation injury than the cord.
1379010
"In Belarus, there is no protection of the population from radiation exposure. ... The state-run Minsk Center of Hygiene and Epidemiology said it found strontium-90, a radioactive isotope linked to cancers and cardiovascular disease, in quantities 10 times higher than Belarusian food safety regulations allow.