[This is the 3 November 2008 English rendering of the German Wikipedia article TLR-2. Translator's notes can be found under the discussion tab above.]
TLR-2 is the name of a biomolecule that plays a role in the human immune system. It is a membrane protein, referred to as a receptor, that sits on the surface of certain cells and is able to recognize foreign or host molecules and transmit corresponding signals to the cell or to the nervous system.
TLR-2 belongs to a large family of homologous toll-like receptors (TLRs) and is described here as an example.