This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
Gamma globulin is synthesized in 
Select and explain. 
A. Liver, B. Kidney, C. Spleen, D. Plasma cells
D: Plasma cells
Answer: D: Plasma cells 
Explanation: Gamma globulins are a class of globulins, identified by their position after serum protein electrophoresis. The most significant gamma globulins are immunoglobulins (antibodies), although some immunoglobulins are not gamma globulins, and some gamma globulins are not immunoglobulins Ref: guyton and hall textbook of medical physiology 12 edition page number: 130,131,132