KANSAS CITY, Mo.--(BUSINESS WIRE)--Aug. 21, 2006-- Teva Neuroscience, Inc., announced today the initiation of the first-ever study designed to examine how the implementation of regularly scheduled interferon beta (IFN-(beta)) neutralizing antibody (NAb) tests in multiple sclerosis (MS) patients receiving high-dose IFN-(beta) therapy ultimately affects treatment patterns, versus the usual care of IFN-(beta) patients. The study, called the NAbs Count Study, began enrollment in approximately 130 centers across the United States with the first patient entering the trial on July 25, 2006.