Prince William County is in a race to establish itself as the center of bioscience research and commercialization and it's making progress. The county’s science accelerator, established two years ago, now has three companies and will add two more in the next few months. Prince William’s head of economic development, Jeff Kaczmarek, says the accelerator is aiming to be at full capacity by the end of next year, as more companies take up its 9,100 SF, which is the only commercially available wet lab space in the region.