This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
Papain acts an gamma globulin to form- 
Select and explain. 
A. 2 Fc fragments, B. 2 Fab fragments, C. 1 Fab fragments, D. None
B: 2 Fab fragments
Answer: B: 2 Fab fragments 
Explanation: The enzyme papain can be used to cleave an immunoglobulin monomer into two Fab fragments and an Fc fragment. The enzyme pepsin cleaves below the hinge region, so a F(ab')2 fragment and a pFc' fragment is formed