Molecular blotting, is a term that alludes to the way toward identifying the presence and amount of DNA, RNA, or protein in cells. It is a technique for exchanging proteins, nucleic acids and ribonucleic acids onto a bearer, more often than not after gel electrophoresis. There are three fundamental sorts of blotting strategies that those in the field ought to be comfortable with: Southern, Northern, and Western. Three extra smearing methods are named Southwestern, Eastern, and Far-Eastern. NA may likewise be tested utilizing DNA microarrays – plates with minute pockets of correlative DNA.