Robert Hooke
Born: 18-Jul-1635
Birthplace: Freshwater, Isle of Wight, England
Died: 3-Mar-1703
Location of death: London, England
Cause of death: unspecified
Birthplace: Freshwater, Isle of Wight, England
Died: 3-Mar-1703
Location of death: London, England
Cause of death: unspecified
Nationality: England
Executive summary: Law of Elasticity, microscopist
Executive summary: Law of Elasticity, microscopist
Zacharias Jansen
Born: 1580 (The Hague)
Died: 1638 (aged 57–58)
Citizenship: Dutch
Fields Optics: Microscopy, Telescopy
Academic advisors: Academic : Academy of the name Zaccharias
Known for: Early innovations in microscopy and telescopy
Theodore Schwan
Born: July 9, 1841
Died: May 27, 1926 (aged 84)
Place of birth: Hanover, Germany
Place of death: Washington, D.C.
Place of burial: Arlington National Cemetery
Allegiance: United States of America
Union
Service/branch: United States Army
Years of service: 1857-1901
Rank: Brigadier General
Unit: 10th U.S. Infantry
11th U.S. Infantry
Commands held: IV Corps
VIII Corps
Rudolf Virchow
Born: 13 October 1821
Schivelbein, Pomerania, Prussia
Died: 5 September 1902 (age 80)
Berlin, German Empire
Nationality: German
Fields: Medicine
Known for: Cellular pathology
Biogenesis
Matthias Jakob Schleiden
Born: 5 April 1804Hamburg, Germany
Died: 23 June 1881 (aged 77)
Frankfurt am Main, Germany
Nationality: German
Fields: Botany
Institutions: University of Jena, University of Dorpat
Alma mater: Heidelberg
Known for: Cell theory
Author abbreviation (botany): Schleid.
Robert Brown 
Born: 21 December 1773
Montrose, Scotland
Died: 10 June 1858 (aged 84)
London, England
Nationality: Scottish
Fields: Botany
Known for: Brownian motion
Author abbreviation (botany): R.Br.
Jan Evangelista Purkyně 
Born: December 17, 1787
Libochovice, Bohemia
Died: July 28, 1869
Prague
Citizenship: Austrian
Nationality: Czech
Fields: anatomy
physiologist
Institutions: University of Breslau
Alma mater:University of Prague
Known for: Purkinje cells
Felix Dujardin
Born: April 5, 1802
Died: April 8, 1860
Nationality: French
Fields: Biology
Known for: protozoans