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.
OAT scores follow a predefined format. For every individual test, a raw score report is generated. A raw score is the sum of an examinee's correct answers. It is then converted to a standard score through an equating method. Standard scores range from 200 to 400 with a mean of 300 and reported in 10 point increments.