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: Pathology
In Myasthenia gravis, antibodies are present against - 
Select and explain. 
A. Muscarinic receptor proteins, B. Nicotinic receptor proteins, C. Protein actin, D. Protein myosin
B: Nicotinic receptor proteins
Answer: B: Nicotinic receptor proteins 
Explanation: Myasthenia gravis is an autoimmune disorder due to development of antibodies against Nm type of nicotinic receptors.