Q.

Which one of the following is correct                 [2015]

1 Lymph = Plasma + RBC + WBC  
2 Blood = Plasma + RBC + WBC + Platelets  
3 Plasma = Blood − Lymphocytes  
4 Serum = Blood + Fibrinogen  

Ans.

(2)

Lymph = Plasma + WBC
Plasma = Blood − Cellular components
Serum = Plasma − Clotting factors