Density-gradient sedimentation in silica sols. Anomalous shifts in the banding densities of polystyrene "latex" beads.
Biochem J
; 153(2): 487-90, 1976 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-6013
ABSTRACT
When polystyrene "latex" beads are centrifuged to equilibrium in gradients of Nalcoag 1030, Nalcoag 1034A and Ludox 130M, which are commercial formulations of colloidal silica, the beads at densities that may be markedly lower or higher than the bulk density. Addition to the gradient of small amounts of certain polymers restores the banding densities towards the expected value. These findings closely mimic previously observed "density shifts" of biological particles. A possible model for this anomalous behavior is discussed.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Centrifugação com Gradiente de Concentração
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Biochem J
Ano de publicação:
1976
Tipo de documento:
Article