Franz Schweigger-Seidel
Introduction '''Franz Schweigger-Seidel''' (September 24, 1834 – August 23, 1871) was a German physiologist born in Halle an der Saale. He was the son of chemist Franz Wilhelm Schweigger-Seidel (1795-1838).In 1858 he obtained his doctorate from the University of Halle with a dissertation titled ''Disquisitiones de callo''. Afterwards he served as an assistant to Rudolf Heidenhain (1834-1897) at the physiological institute in Breslau, and from 1865 was an assistant to Carl Ludwig (1816-1895) at the University of Leipzig. In 1866 he received his habilitation, and during the following year became an associate professor at Leipzig.His name is associated with "Schweigger-Seidel sheaths", which are spindle-shaped sleeves that cover penicillar arterioles of the spleen.
Selected writings * ''Über den Übergang körperlicher Bestandteile aus dem Blute in die Lymphgefäße'', Leipzig (1861)* ''Die Nieren des Menschen und der Säugetiere in ihrem feineren Bau'', Halle (1865)* ''Über das Centrum tendineum des Zwerchfelles''. Arbeiten aus der Physiologischen Anstalt zu Leipzig, with Carl Ludwig (1866)* ''Einige Bemerkungen über die rothen Blutkörperchen''. Arbeiten aus der Physiologischen Anstalt zu Leipzig, with Alexander Schmidt (1867)* ''Die Lymphgefässe der Fascien und Sehnen''. Leipzig, with Carl Ludwig (1872)
References *  Franz Schweigger-Seidel (biography)*  catalogus professorum lipsiensis (biography)*  Color atlas of cytology, histology, and microscopic anatomy by Wolfgang Kühnel (definition of eponym)