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
Sedimentation coefficient of Ig E is: 
Select and explain. 
A. 7S, B. 8S, C. 11S, D. 20 S
B: 8S
Answer: B: 8S 
Explanation: Ans : b 8S Ref: Ananthanarayanan 8th editionSvedberg unit - a sedimentation constant of 1 x 1013sec. Sedimentation unit is studied by ultracentrifugation - for diversity of antibody moleculeIgG -7IgA -7IgM -19Ig D -7IgE -8