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: Microbiology
Endotoxins have all but one of the properties given below: 
Select and explain. 
A. Produced by gram negative bacteria, B. Produced by gram positive bacteria, C. Not secreted outside the cell, D. Cannot be toxoided
B: Produced by gram positive bacteria
Answer: B: Produced by gram positive bacteria 
Explanation: None