Q.

Serum differs from blood in                   [2016]

1 lacking globulins  
2 lacking albumins  
3 lacking clotting factors  
4 lacking antibodies  

Ans.

(3)

Serum is the fluid that separates from blood plasma on centrifugation. Serum is essentially similar in composition to plasma but lacks fibrinogen and other substances that are used in the coagulation process.