German histologists

Siegmund Mayer (December 27, 1842 – September, 1910) was a German physiologist and histologist.
Mayer was born in Bechtheim in Rhenish Hesse. He studied at the Universities of Heidelberg, Giessen and Tübingen, where in 1865 he obtained his doctorate. He subsequently worked with Hermann Ludwig Ferdinand von Helmholtz (1821–1894) in Heidelberg, Carl Friedrich Wilhelm Ludwig (1816–1895) and Julius Friedrich Cohnheim (1839–1884) in Leipzig, and with Ernst Wilhelm von Brücke (1819–1892) in Vienna.
In 1869 he was habilitated for physiology at Vienna, and during the next year became Karl Ewald Konstantin Hering's assistant in Prague. In 1872 he became an associate professor and in 1887 a full professor. From 1880 he was director at the newly founded institute of histology.
Mayer made several important contributions particularly concerning the physiology of the heart and vessels, respiration and intestines. He was one of the first to describe chromaffin cells in the sympathetic nerve, and with Ewald Hering and Ludwig Traube, his name is associated with "Traube–Hering–Mayer waves", a phenomenon that deals with rhythmic variations in arterial blood pressure.In addition to his scholarly papers published in scientific journals, he made contributions to Salomon Stricker's Handbuch der Lehre von den Geweben des Menschen und der Thiere (1872) and to Ludimar Hermann's Handbuch der Physiologie (1879). He was also author of Histologisches Taschenbuch (1887).
Mayer died September 1910 in Prague.

Karl von Korff (born 6 October 1867, in Hajen near Gröhnde) was a German anatomist and histologist.
From 1890 to 1895 he studied medicine at the universities of Freiburg, Berlin and Kiel, receiving his doctorate at Kiel in 1895 with the dissertation Beitrag zur Lehre vom Ulcus corneae serpens. In 1896/97 he served as a ship's physician for a Hamburg shipping company traveling to China and Japan, and afterwards worked as an assistant to Walther Flemming at the anatomical institute in Kiel. In 1902 he obtained his habilitation for anatomy, and in 1913 was named an associate professor at the University of Tübingen.In 1905 he described what would later become known as "Korff fibers", defined as fibers that pass between odontoblasts at the periphery of the dental pulp and fan out into the dentin.

Andreas Franz Wilhelm Schimper (12 May 1856 – 9 September 1901) was a German botanist and phytogeographer who made major contributions in the fields of histology, ecology and plant geography. He travelled to South East Asia and the Caribbean as part of the 1899 deep-sea expedition. He coined the terms tropical rainforest and sclerophyll and is commemorated in numerous specific names.