The Protein Man's Blog | A Discussion of Protein Research

Some Very Useful Junk

Assessing Nucleic Acid Purity Via Absorption Spectroscopy

What Are the Different Types of Immunoprecipitation?

A DNA ladder, also known as a molecular size marker or standard DNA marker, is a solution containing DNA fragments of varying lengths and sizes that serves as a reference in estimating the size of unknown DNA molecules after they are separated by agarose or acrylamide gel electrophoresis. DNA ladders are the mainstay in every laboratory that routinely performs DNA experiments.