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It uses scientific knowledge and established expertise to improve the welfare of animals as pets , in zoos , laboratories , on farms and in the wild . The next least available resource that could prevent hospitalization was electrocardiogram tracing and interpretation , followed in order by radiology results in less than 4 hours , laboratory results in less than 4 hours , intravenous therapy , and oxygen monitoring and therapy . This research-based knowledge is used in fields , laboratories and classrooms . All faculty members will be issued keys to their assigned office , laboratories and classrooms . Those committees typically address issues of emergency response , source disposal , waste , radon , decontamination and decommissioning , laboratories , naturally occurring radioactive material , and monitoring .