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Fluorochrome staining of multilamellar liposomes

Fluorochrome staining of multilamellar liposomes

Stain Technology 53(6): 307-310

Multilamellar liposomes can be stained with such fluorochromes as acridine orange, eosin Y, neutral red, and thiazine red. The liposomes are brought into a 1% solution of the fluorochrome; 5-10 minutes later they are centrifuged and washed by resuspending in water or phosphate buffered saline three times. The last pellet is resuspended and a drop studied with the fluorescence microscope (1000 x magnification). The fluorochrome is seen to be accumulated in the liposomal membranes. Acridine orange could also be trapped in the aqueous compartments of the liposomes but the trapped fluorochrome was gradually lost from the liposomes. Part of the fluorochrome, however, remained associated with the liposomal membranes for a long time. Additional experiments justify the conclusion that an equilibrium is maintained between fluorochromes in the aqueous and lipid phases.

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Accession: 038940610

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PMID: 89716

DOI: 10.3109/10520297809111951

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