Drama
German scientist Paul Ehrlich makes remarkable advancements in the field of medical diagnostics with his research in cellular staining with dyes. His work results in new knowledge about tuberculosis, but also leads to his contraction of the disease. Ehrlich travels to Egypt, where he investigates diphtheria and earns more accolades. Eventually, his research in treating diseases leads to the development of a 'magic bullet' treatment for syphilis.
Directed by
William Dieterle
Ruth Gordon
Mrs. Ehrlich
Theodore von Eltz
Dr. Kraus
Howard M. Mitchell
Dr. Virchow
Paul Harvey
Defense Attorney
Sig Ruman
Dr. Hans Wolfert
Otto Kruger
Dr. Emil Von Behring
Torben Meyer
Kadereit
Edward G. Robinson
Dr. Paul Ehrlich
Ann E. Todd
Marianne
Louis Calhern
Dr. Brockdorf
Maria Ouspenskaya
Franziska Speyer
Irving Bacon
Becker
Donald Crisp
Minister Althoff
John Hamilton
Hirsch
Harry Davenport
Judge
Donald Meek
Mittelmeyer
Henry O'Neill
Dr. Lentz
Charles Halton
Sensenbrenner
Wilhelm von Brincken
Officer
Louis Jean Heydt
Dr. Kunze
Montagu Love
Professor Hartmann
Herbert Anderson
Medical Assistant
Greta Meyer
Female Nurse
Brandon Tynan
Doctor
Frank Reicher
Old Man
Frank Mayo
Assistant in Hospital
Stuart Holmes
Male Nurse
Lisa Golm
Nurse
Albert Bassermann
Dr. Robert Koch
Edward Norris
Dr. Morgenroth
Frank Lackteen
Arab Man
Frank Jaquet
Banker
Wolfgang Zilzer
Kellner
Cliff Clark
Haupt
Robert Strange
Koerner
Egon Brecher
Martl
Hedwiga Reicher
Nurse
Hermine Sterler
Miss Marquardt
Douglas Wood
Speidler
Louis Adlon
Hospital Attendant
Louis V. Arco
Dr. Bertheim
Gretl Dupont
Mother
Ludwig Hardt
Court Clerk
Wilfred Hari
Dr. Hata
Ernst Hauessermann
Hans Weisgart
John Henrick
Dr. Bucher
Rolf Lindau
Patient
Frederic Mellinger
Court Stenographer
Norman Phillips Jr.
Stable Boy
Paul Phillips
Patient
Elaine Renshaw
Arab Woman
Walter O. Stahl
Doctor
Robert R. Stephenson
Merk - Patient
Rolla Stewart
Steffi
Gisela Werbisek
Mother

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