The use of DNA amplification fingerprinting (DAF) as a tool for monitoring mixed microbial populations in bioreactors was evaluated. Short (8-mer or mer). PDF | DNA amplification fingerprinting (DAF) is a strategy for genetic typing and mapping that uses one or more very short (≥5 nt) arbitrary oligonucleotides to. Identification of DNA Amplification Fingerprinting (DAF) markers close to the symbiosis-ineffective sym31 mutation of pea (Pisum sativum L.).

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The high sensitivity and specificity of properly targeted long chain primer pairs and the great variety of specimens amenable to PCR analysis, including nonculturable specimens such fongerprinting paraffin embedded tissues, has generated numerous diagnostic applications 4. A new method of using molecular genetics for medical diagnosis. Following polyacrylamide gel electrophoresis pagethese demonstrate an array of amplicons that yield a banding fingerprint that is characteristic for each combination of short primer and DNA source.

The polymerase chain reaction: Please review our privacy ringerprinting.

An overview and development of diagnostic protocols at the LCDC. DNA diagnostics — Molecular techniques and automation. LCDC has begun the analysis of certain pseudomonads using this technology and we will shortly be reporting on its amplificatikn in our hands. Can J Infect Dis.


Another genetic approach has recently been suggested by two groups 56 in which PCR amplification of DNA polymorphisms was directed by single small primers only eight to 10 nucleotides in length. Until then it would seem reasonable to predict that daf technology will provide high versatility while retaining the selectivity fingerprintint sensitivity of long, dual primer PCR and will shortly be part of the diagnostic trade of clinical microbiologists.

Fingerprjnting J, McClelland M.

DNA amplification fingerprinting: Another diagnostic tool?

The conditions required for effective long chain, dual primer PCR are considerably more stringent with respect to hybridization and enzymatic conditions than for daf. U se of the polymerase chain reaction pcramplification of targeted nucleotide sequences as a means of identifying microorganisms for diagnostic and epidemiologic purposes 12has initiated a transformation in laboratory based approaches to infectious disease diagnosis and was the subject of an earlier LCDC report 3.

Particularly important are the specialized silver staining method 8 required for resolution of small, as opposed to large, amplicons, and the primer concentrations required for effective priming.

National Center for Biotechnology InformationU. The use of long, dual primer PCR requires that there be extensive preexisting knowledge of the target sequences. DNA amplification fingerprinting using very short arbitrary oligonucleotide primers. Fingerprinting genomes using PCR with arbitrary primers. Support Center Support Center. Application of the polymerase chain reaction to the diagnosis of human genetic disease.


Multiple priming sites on each DNA strand fingeerprinting amplified efficiently by short primers under relaxed conditions and the number of amplicons reproducibly obtained in daf is largely dependent on the short primer sequence rather than length, provided the number exceeds four 5 — 7. DNA polymorphism amplified by arbitrary primers are useful as genetic markers.

DNA amplification fingerprinting: Another diagnostic tool?

Fast fignerprinting sensitive silver staining of DNA in polyacrylamide gels. Author information Copyright and License information Disclaimer. This technique has been designated DNA amplification fingerprinting daf.

There appears to be some fingerpfinting advantages to daf compared to the more traditional PCR approach. There is not such a requirement for daf. N Engl J Med. Reiss J, Cooper DN.

The polymerase chain reaction.

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