A manufacturer of biologic pharmaceuticals will locate a production facility in the St. Louis County town of Berkeley, retaining 160 workers from a plant it purchased and eventually adding another 160. Gov. Jay Nixon was in Berkeley Wednesday for the announcement by Gallus Biopharmaceuticals. The company bought the Centocor Biologics facility and plans to hire about 160 Centocor workers. Gallus also plans to create 160 new jobs over the next five years.