Molecular biology techniques

Molecular biology techniques


The following table shows a very basic summary of molecular biology techniques

TechniqueDescription
Southern blottingDetects DNA
Northern blottingDetects RNA
Western blottingDetects proteins
Uses gel electrophoresis to separate native proteins by 3-D structure
Examples include the confirmatory HIV test

Molecular biology techniques
  • SNOW (South - NOrth - West)
  • DROP (DNA - RNA - Protein)

Enzyme-linked immunosorbent assay (ELISA)
  • a type of biochemical assay used to detect antigens and antibodies
  • a colour changing enzyme is attached to the antibody if looking for an antigen and to an antigen if looking for an antibody
  • the sample therefore changes colour if the antigen or antibody is detected
  • an example includes the initial HIV test