ZONE centrifugation through sucrose density gradients is widely used for the separation of substances differing in their sedimentation behaviour, and has been applied to viruses, ribosomes and ...

Rat liver nuclei, after preliminary isolation in 2.2 molar sucrose solution, were separated into density classes by centrifugation at 95,000 g for 45 to 85 minutes in a sucrose density gradient ...

A crude pea (Pisum sativum L. var. Homesteader) mitochondrial preparation was divided into two equal parts. One part was layered on a Dextran-40 step gradient, and the other on a sucrose step gradient ...

Meselson, Stahl and Vinograd 1 first described the equilibrium density gradient technique for the examination of DNA in the analytical ultracentrifuge, and the technique has since been used to ...