title: The use of a viscosity barrier in subcellular fractionation.
mesh_terms: D000818:Animals; D002458:Cell Fractionation / Q000379:methods*; D002499:Centrifugation, Density Gradient / Q000379:methods; D005347:Fibroblasts / Q000648:ultrastructure; D008433:Mathematics; D051381:Rats; D013347:Subcellular Fractions / Q000648:ultrastructure*; D014783:Viscosity