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231224s2012 xx |||||o 00| ||eng c |
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7 |
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|a 10.1021/la300993a
|2 doi
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|a eng
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| 100 |
1 |
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|a Holden, Deric A
|e verfasserin
|4 aut
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| 245 |
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|a Resistive-pulse detection of multilamellar liposomes
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|c 2012
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a Date Completed 07.09.2012
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|a Date Revised 21.11.2013
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The resistive-pulse method was used to monitor the pressure-driven translocation of multilamellar liposomes with radii between 190 and 450 nm through a single conical nanopore embedded in a glass membrane. Liposomes (0% and 5% 1,2-dioleoyl-sn-glycero-3-phospho-l-serine (sodium salt) in 1,2-dilauroyl-sn-glycero-3-phosphocholine or 0%, 5%, and 9% 1,2-dipalmitoyl-sn-glycero-3-phospho(1'-rac-glycerol) (sodium salt) in 1,2-dipalmitoyl-sn-glycero-3-phosphocholine) were prepared by extrusion through a polycarbonate membrane. Liposome translocation through a glass nanopore was studied as a function of nanopore size and the temperature relative to the lipid bilayer transition temperature, T(c). All translocation events through pores larger than the liposome, regardless of temperature, show translocation times between 30 and 300 μs and current pulse heights between 0.2% and 15% from the open pore baseline. However, liposomes at temperatures below the T(c) were captured at the pore orifice when translocation was attempted through pores of smaller dimensions, but squeezed through the same pores when the temperature was raised above T(c). The results provide insights into the deformation and translocation of individual liposomes through a porous material
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Liposomes
|2 NLM
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|a Durapatite
|2 NLM
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|a Watkins, John J
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|a White, Henry S
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 28(2012), 19 vom: 15. Mai, Seite 7572-7
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|x 1520-5827
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|g volume:28
|g year:2012
|g number:19
|g day:15
|g month:05
|g pages:7572-7
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