Oral polio vaccine (OPV) is an attenuated vaccine, produced by the passage of the virus through non-human cells at a sub-physiological temperature, which produces spontaneous mutations in the viral genome. Oral polio vaccines were developed by several groups, one of which was led by Albert Sabin.
What is the OAT? The Optometry Admission Test (OAT) is a standardized examination. It is designed to measure the academic ability and comprehension of scientific information. The OAT is sponsored by the Association of Schools and Colleges of Optometry (ASCO) for applicants seeking admission to an optometry program.
The OAT exam is computerized and examinees are allowed to take the OAT an unlimited number of times, but must wait at least 90 days between testing dates. Applicants who have three or more OAT attempts must apply for permission to test again, and from that point forward may retest only once per twelve-month period.he OAT is sponsored by the Association of Schools and Colleges of Optometry (ASCO) for applicants seeking admission to an optometry program. All schools and colleges of optometry in the United States, and the University of Waterloo, Canada require the OAT.