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. Hillary and Mehoni, B. Hoffman and Shauddin, C. Warren and Marshall, D. Yersin and Kitasato
B: Hoffman and Shauddin
Answer: B: Hoffman and Shauddin 
Explanation: Ans: b (Hoffman and shauddin) Ref: Ananthanarayan, 7th ed, p. 377Treponema pallidum was discovered by Hoffman and ShauddinWarren and Marshall discovered Helicobacter pylori (PGI Dec 2007)Yersin and Kitasato discovered plague bacilli