All the following are exceptions to Koch's postulates except?: (A) Mycobacterium Leprae, (B) Treponema pallidum, (C) Neisseria gonorrhoea, (D) Vibrio cholerae
Answer is D. M leprae & T pallidum – Cannot be grown invitro however can be maintained in animals.
N gonorrhoea – There is no animal model, however bacteria can be grown in vitro.