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- W2025584111 abstract "We show that both uncoated and polyacrylamide-coated capillaries provide separation of large DNA restriction fragments (2.0-23.1 kbp) by capillary electrophoresis in dilute cellulosic polymer solutions. Uncoated capillaries, however, provide significantly better resolution of DNA fragments, particularly when ultra-dilute polymer solutions are used. This is because electroosmotic flow in uncoated capillaries increases the residence time of DNA in the capillary, without significantly contributing to band-broadening. At a given field strength and polymer concentration in the buffer, the electrophoretic mobilities of DNA restriction fragments in coated capillaries are virtually identical to those previously measured in uncoated capillaries. It is concluded that the fused silica surface of the capillary does not play a significant role in the mechanism of DNA separation by capillary electrophoresis in uncrosslinked polymer solutions. Thus, the separation of large DNA which has been observed to occur in ultra-dilute polymer solutions arises primarily from entanglement interactions between the cellulosic polymers and DNA restriction fragments which occur within the bulk of the polymer solution." @default.
- W2025584111 created "2016-06-24" @default.
- W2025584111 creator A5029213023 @default.
- W2025584111 creator A5037931742 @default.
- W2025584111 creator A5057944860 @default.
- W2025584111 date "1995-01-01" @default.
- W2025584111 modified "2023-10-17" @default.
- W2025584111 title "The use of coated and uncoated capillaries for the electrophoretic separation of DNA in dilute polymer solutions" @default.
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