This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
The following bacteria can invade intact corneal epithelium except: 
Select and explain. 
A. Neissseria gonorrhoea, B. Corynebacterium, C. Meningococci, D. Legionella
D: Legionella
Answer: D: Legionella 
Explanation: Legionella