LAT Laboratory Animal Technician Questions and Answers 100% Pass

LAT Laboratory Animal Technician Questions and Answers 100% Pass ... •Disrupts microorganisms protein structure •Ionizing radiation can be lethal to humans •Gamma rays used on instruments and supplies. •Irradiated diets are nutritionally supplemented. •Non-ionizing radiation less penetrability. •Irradiated items are not radioactive. ... •Table 9.2 - active contact zoonoses ... risk of infection if organisms are resistant +/or highly virulent; risk if the animals are particularly susceptible (e.g. immunocompromised). ... Antigen-specific antibodies can be identified in diagnostic tests. ... Controlled exposure to antigens is the principle behind vaccination against bacterial, viral and allergic diseases. ... Diagnostic procedures are performed at scheduled intervals. ... Enteritis can be caused by bacteria, viruses, endoparasites, spoiled food, or contaminated water; Salmonella, canine parvovirus, feline panleukopenia, MHV, roundworms, tapeworms, hookworms, and coccidian; Spoiled food and contaminated water from the direct action of bacteria, mold, fungi or their chemical toxins. ... Hamsters, for example, show no signs of the viral disease lymphocytic choriomeningitis (LCM) when they carry the disease. People who handle hamsters infected with this virus can become ill with the disease. Mice exposed to such hamsters frequently develop serious clinical disease ... Imported primates and other wild animals, often contain exotic disease organisms. •Be on alert for outbreaks and zoonotic health problems. •Cleanliness and sanitation are still backbone of disease prevention and control. ... Indirectly = airborne or aerosol transmission ... Microscopic lesions can be seen under the microscope. ... Mortality refers to the number of animals that die from a disease. ... Sick animals that seem near death are said to be moribund. ... Vertical transmission = 1 generation to next = mother to offspring "Modified SPF" a barrier with less stringent procedures; animals purchased only from SPF vendors Abduction Movement of bone away from midline Abscesses Swellings filled with purulent material (pus) are a mixture of dead bacteria, liquefied tissue, and white blood cells. Most common just under skin, at site of puncture wounds. Bacteria are deposited under skin and the skin closes over them. White blood cells to fight the infection. White blood cells release substances that digest and liquefy some of the tissue, the bacteria, and themselves. Activity Cages rodent - an attached wheel-shaped