Investigate the relationship between organisms and disease, including the control of epidemics and the effects of antibiotics on microorganisms. Prepare technical reports and recommendations based upon research outcomes. Supervise biological technologists and technicians and other scientists. Provide laboratory services for health departments, for community environmental health programs, and for physicians needing information for diagnosis and treatment. Use a variety of specialized equipment such as electron microscopes, gas chromatographs and high pressure liquid chromatographs, electrophoresis units, thermocyclers, fluorescence activated cell sorters and phosphorimagers. Examine physiological, morphological, and cultural characteristics, using microscope, to identify and classify microorganisms in human, water, and food specimens. Study growth, structure, development, and general characteristics of bacteria and other microorganisms to understand their relationship to human, plant, and animal health. Isolate and maintain cultures of bacteria or other microorganisms in prescribed or developed media, controlling moisture, aeration, temperature, and nutrition. Observe action of microorganisms upon living tissues of plants, higher animals, and other microorganisms, and on dead organic matter. Study the structure and function of human, animal, and plant tissues, cells, pathogens and toxins. Conduct chemical analyses of substances such as acids, alcohols, and enzymes.