This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli), Subject name: Microbiology
Buruli ulcer is caused by 
Select and explain. 
A. Mycobacterium ulcerans, B. Mycobacterium marinum, C. Aycobacterium kansasi, D. Mycobacterium fouitum
A: Mycobacterium ulcerans
Answer: A: Mycobacterium ulcerans 
Explanation: - Buruli ulcer is caused by atypical mycobacteria named as Mycobacteria ulcerans - Mycobacteria ulcerans- It is a water borne skin pathogen which is categorised under non - photochromogens ( Runyon's classification ) This cause lesions which are typically painless ulcers and nodules. It has narrow temp.range of 31 degree - 34 degree C