Laboratory specialists work on the last phase of vaccine manufacture inside a clean laboratory at the Sotio AS biotechnology company in Prague, Czech Republic, on Wednesday, July 20, 2016. Czech Republics richest man, billionaire Petr Kellner's Sotio biotech company, which is seeking to develop active cellular immunotherapy for treatment of prostate, ovarian and lung cancer, has invested "billions of koruna" into research and clinical development, the unit's spokesman, Richard Kapsa, said without elaborating. Photographer: Martin Divisek/Bloomberg via Getty Images
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