This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Which among the following is identified by Western blotting 
Select and explain. 
A. DNA, B. RNA, C. Proteins, D. t-RNA
C: Proteins
Answer: C: Proteins 
Explanation: The procedure to separate and detect DNA fragments, termed Southern blotting. The Nohern and Western blot transfer techniques are used to size and quantitate specific RNA and protein molecules, respectively. A fouh hybridization technique, the Southwestern blot, examines protein-DNA interactions. In this method, proteins are separated by electrophoresis, blotted to a membrane, renatured, and analyzed for an interaction with a paicular sequence by incubation with a specific labeled nucleic acid probe. Ref: Weil P. (2011). Chapter 39. Molecular Genetics, Recombinant DNA, & Genomic Technology. In D.A. Bender, K.M. Botham, P.A. Weil, P.J. Kennelly, R.K. Murray, V.W. Rodwell (Eds), Harper's Illustrated Biochemistry, 29e.