German embryologists

August_Rauber

August Rauber (March 9, 1841 – February 16, 1917) was a German anatomist and embryologist born in Obermoschel in the Rhineland-Palatinate.
Rauber was born the fourth of five children to Stephan Rauber and Rosalie née Oberlé. He studied medicine in Munich, obtaining his doctorate in 1865. At Munich his instructors included Theodor Bischoff (1807–1882), Nicolaus Rüdinger (1832–1896) and Julius Kollmann (1834–1918).

Dietrich_Barfurth

Karl Dietrich Gerhard Barfurth (25 January 1849 – 23 March 1927) was a German anatomist and embryologist born in Dinslaken.
He studied mathematics and sciences at the University of Göttingen, and medicine (1879–1882) at the University of Bonn. In 1882 he earned his medical doctorate, and in 1883 received his habilitation in anatomy. In 1888 he worked as prosector under Friedrich Sigmund Merkel (1845–1919) in Göttingen. From 1889 to 1896 he was a professor of anatomy, embryology and histology at the University of Dorpat, and afterwards was professor of anatomy at the University of Rostock and director of the institute of anatomy.
Barfurth is remembered for regeneration research of body parts (tissues, limbs, organs, etc.) in animals at the embryonic, larval and adult stages of life. He was the author of the following works on regeneration:

Regeneration und Transplantation (1917)
Methoden zur Erforschung der Regeneration bei Tieren (Methods for the Study of Regeneration in Animals) (1920)

Hans_Adolf_Eduard_Driesch

Hans Adolf Eduard Driesch (28 October 1867 – 17 April 1941) was a German biologist and philosopher from Bad Kreuznach. He is most noted for his early experimental work in embryology and for his neo-vitalist philosophy of entelechy. He has also been credited with performing the first artificial 'cloning' of an animal in the 1880s, although this claim is dependent on how one defines cloning.

Oskar_Hertwig

Oscar Hertwig (21 April 1849 in Friedberg – 25 October 1922 in Berlin) was a German embryologist and zoologist known for his research in developmental biology and evolution. Hertwig is credited as the first man to observe sexual reproduction by looking at the cells of sea urchins under the microscope.