This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anitibody, Subject name: Microbiology
Immunoglobulin present in local secretions is? 
Select and explain. 
A. IgG, B. IgA, C. IgM, D. IgD
B: IgA
Answer: B: IgA 
Explanation: ANSWER: (B) IgAREF: Robb in s 8th ed chapter 6See APPENDIX-20 for "IMMUNOGLOBULINS"Repeat (***)IgA is present in body in two forms; serum IgA and secretory IgA.