ATTO-TEC GmbH, Siegen, Germany

ATTO-TEC GmbH was founded in autumn 1999 as a spin-off of the University of Siegen. The decisive factor was the scientific experience of the four founders with organic laser and fluorescent dyes, some of which lasted decades. 

In particular, Prof. Drexhage's research team focused on the synthesis and development of long-wavelength fluorophores for the labeling of biomolecules in the 1990s, as fluorescence-based techniques were established as sensitive detection and analysis methods in the emerging field of life sciences. Thus, in the summer of 2000, the young company was able to present its own market-ready products as a manufacturer of fluorescent dyes for medicine, diagnostics and biology at ACHEMA in Frankfurt am Main.

ATTO-TEC was acquired by Leica in 2024 and is a wholly owned subsidiary of Leica Microsystems.

Mouse fibroblasts where F-actin is labelled with FITC (green), tubulin with Cy5 (red), and nuclei with DAPI (blue). Image courtesy of Dr. Günter Giese, Max Planck Institute for Medical Research, Heidelberg, Germany.

Overview of Fluorescent Dyes in terms of Applications and Properties

An introduction to commonly used fluorescent dyes and an overview of their characteristics are given in this article. Fluorescence microscopy is used for the study of specific cellular components with…
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