This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spirochetes, Subject name: Microbiology
Treponema pallidum was discovered by - 
Select and explain. 
A. Robert Koch, B. Twort, C. Schaudinn and Hoffman, D. E Herman
C: Schaudinn and Hoffman
Answer: C: Schaudinn and Hoffman 
Explanation: Ans. is 'c' i.e., Schaudinn and Hoffman BacteriaDiscovered byLepra bacillus (M. Leprae)Hansen (1874)GonococcusNeisser(1879)StaphylococcusOgston(1881)Diphtheria bacillus (C. Diphtheria)Loeffler(1884)Tetanus bacillus (C. Tetani)Nicolaier(1884)PneumococcusFraenkel (1886)Causative organism for Malta fever (Brucella)Bruce(1887)Spirochete of syphilis (T pallidum)Schaudinn and Hoffmann (1905)