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AMSTERDAM - NETHERLANDS - 19 OCTOBER 2005 -- Solvay Pharmaceutical plant in Weesp close to Amsterdam. -- MDCK cells (dog  cells) through a microscope, which have been cultivated in the laboratory and are going to be used to cultivate influenza viruses for vaccines. The usage of cells instead of chicken eggs is a new method to grow viruses.-- PHOTO:  EUP-IMAGES / Solvay Pharmaceutical