This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc. (W.B.C), Subject name: Pathology
Bence jones proteinuria is derived from? 
Select and explain. 
A. Alpha globulins, B. Light chain globulins, C. Gamma globulins, D. Delta globulins
B: Light chain globulins
Answer: B: Light chain globulins 
Explanation: Ans. (b) Light chain globulins(Ref: R 9th/pg 598-602)Excretion of light chains in the urine has been referred to as Bence Jones proteinuria.Light chains includes k and l (kappa and lambda)