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Nucleic acid electrophoresis is used in many molecular biology research applications to verify experimental results, and sometimes to separate and

Gel electrophoresis separates DNA/RNA mainly by size under an electric field. This overview covers core principles, key historical milestones (Tiselius to capillary sequencing), and today’s precast agarose/PAGE workflows used in cloning, PCR, and NGS.

A practical troubleshooting guide for nucleic acid gel electrophoresis covering no or faint bands, smeared bands, poor separation, abnormal migration, quantification errors, and common loading or gel artifacts—with cause-and-solution tables for lab workflows.

Agarose (CAS 9012-36-6) is the neutral polysaccharide fraction of agar, widely used for nucleic acid electrophoresis and biomolecule separation. This introduction covers its origin from red algae, agarobiose structure, gelation hysteresis, electroendosmosis (EEO), and typical quality specs such as gel strength, sulfate, and nuclease-free requirements.

When an agarose gel looks wrong, the first question is rarely theoretical. It is practical: Why are the bands smeared?

Agarose (CAS 9012-36-6) is a purified linear polysaccharide from red seaweed. Ask what is agarose, and the short laboratory answer

Agarose (CAS 9012-36-6) is a neutral linear polysaccharide purified from red seaweed and sold as a white powder for making