Botulinum toxin
In 1895 (seventy-five years later), Émile van Ermengem, professor of bacteriology and a student of Robert Koch, correctly described "Clostridium botulinum" as the bacterial source of the toxin. Thirty-four attendees at a funeral were poisoned by eating partially salted ham, an extract of which was found to cause botulism-like paralysis in laboratory animals. Van Ermengem isolated and grew the bacterium, and described its toxin, which was later purified by P Tessmer Snipe and Hermann Sommer.
Peter Ludvig Panum
From 1855 he was a professor at the University of Kiel, where he established a laboratory for physiology. Troubled by anti-Danish sentiment at Kiel, he relocated to the University of Copenhagen during 1862, where he spent the remainder of his career. Among his students at Copenhagen were physiologist Christian Bohr (1855-1911) and zymologist Emil Christian Hansen (1842-1909). 
Panum is acknowledged as being the first person to perform systematic and scientific studies of endotoxin, a substance once referred to as "putrid poison" that was thought to be responsible for symptoms and signs observed in individuals with sepsis.