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
Analysis of protein antigen is by 
Select and explain. 
A. Southern blot, B. Nohern blot, C. Western blot, D. Eastern blot
C: Western blot
Answer: C: Western blot 
Explanation: The western blot is a widely used analytical technique used in molecular biology, immunogenetics and other molecular biology disciplines to detect specific proteins in a sample of tissue homogenate or extract. Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno : 579