If a foreign body penetrates the skin, phagocytes in the damaged tissue are the first to react. So-called M1-type macrophages release pro-inflammatory messenger substances. These include prostaglandins. These hormones trigger a pain stimulus. Author: 3sat/nano/DOCUVISTA Filmproduktion/Marilena Schulte,Maike Wurtscheid/Jörg Becker,Sergios Roth/Tatjana Theuer/Jochen Schmidt Translation and dubbing: alugha Click here to see more videos: https://alugha.com/TerraX
In ancient Egypt, the ancestor of the domestic cat was revered and became the companion of people. From the realm of the pharaohs, the first tame specimens probably reached today's Europe with Roman soldiers. Author: ZDF/Terra X/Spiegel TV/ Nanje de Jong-Teuscher, Kirsten Hoehne/Anja Schütze, Uli W
Stromatolites are calcareous deposits. The stones can be up to 3.5 billion years old. For a long time they were known only as fossils, until 1956, when a "living" colony of stromatolites was discovered off the west coast of Australia. Author: ZDF/Terra X/Viking Film/Iris Gesang/Andreas Kieling, Fra
How do we see? The structure of the eye: from the transparent cornea to the retina. Author: 3sat/nano, Bluemoon Media, Volker Wasmuth+Patrick Zeilhofer, M. Herrmann+T. Külgen+D. Zanetti, Tobias Adams, 3D Maxi Translation and dubbing: alugha Click here to see more videos: https://alugha.com/Terra
