<prompt> Western blot technique is done for-Mitochondiral RNADouble strand DNAr-RNAProtein  <response>: Visualization of a specific DNA or RNA fragment among the many thousand of contaminating molecules requires the convergence of a number of techniques collectively termed the blot transfer.Southern blot Detects DNANorthern blot Detects RNAWestern blot Detects proteins proteins are separated by electrophoresis, renatured and analysed for an interaction by hybridization with a specific labelled DNA probe. 