AMSTERDAM - NETHERLANDS - 19 OCTOBER 2005 -- Solvay Pharmaceutical plant in Weesp close to Amsterdam. -- Jeroen MEDEMA Sr. Scientist for Vaccines is occupied in developing influenza vaccines. Here Jeroen is checking on 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 / JUHA ROININEN