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PCR Methods Appl. 3:338-345, 1994 ©1994 by Cold Spring Harbor Laboratory Press; ISSN 1088-9051 Cloning and analysis of PCR-generated DNA fragments.Stratagene Cloning Systems, La Jolla, California 92037. Abstract Methods are presented for the improved yield and analysis of blunt-ended cloning of PCR-generated DNA fragments. We show that Pfu DNA polymerase polishing of Taq DNA polymerase-generated fragments increases the yield and efficiency of cloning. Using a triple primer set consisting of two outside, asymmetrically distanced primers and one fragment-specific primer, both the presence and orientation of cloned inserts can be determined. Application of these methods allows the generation and cloning of a fragment in 1 day and the analysis of putative clones the next, thereby saving a substantial amount of both time and effort.
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