ANTIBIOTIC SUSCEPTIBILITY TESTING. Bacteria demonstrate two kinds of resistance to antibiotics, namely intrinsic resistance and acquired resistance. Intrinsic resistance means that the species was resistant to an antibiotic even before its introduction.
Radioactive contamination and radiation exposure could occur if radioactive materials are released into the environment as the result of an accident, an event in nature, or an act of terrorism. Such a release could expose people and contaminate their surroundings and personal property.
While there are many causes of radiation pollution (including research and medical procedures and wastes, nuclear power plants, TVs, computers, radio waves, cell-phones, etc.), the most common ones that can pose moderate to serious health risks include: Defense weapon production â may also release radioactivity from the handled radioactive materials (usually of high health risks). 2  However, unless accident occurs, the current standards will not allow the release of any significant amount of radiation.