Photo de stock - 12 October 2018, Austria, Vienna: Professor Martina Weber works at the microscope in the laboratory of the Institute of Botany at the University of Zurich. In addition, the world's largest pollen database ""paldat.org"" can be seen. She is one of the few experts worldwide to specialize in forensic pollen analysis. Criminologists, including from the Federal Criminal Police Office, make a pilgrimage to her in Vienna to inquire about the method. (to dpa ""The pollen profilers - with pollen on a manhunt"") Photo: Jan Gott/dpa. - Vienna/Austria

Photo de stock: 12 October 2018, Austria, Vienna: Professor Martina Weber works at the microscope in the laboratory of the Institute of Botany at the University of Zurich.

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