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DNA, Complementary: Single-stranded complementary DNA synthesized from an RNA template by the action of RNA-dependent DNA polymerase. cDNA (i.e., complementary DNA, not circular DNA, not C-DNA) is used in a variety of molecular cloning experiments as well as serving as a specific hybridization probe.
 JoVE In-Press

Generation of a Gene-Disrupted Streptococcus Mutans Strain Without Gene Cloning

1Department of Translational Research, Tsurumi University School of Dental Medicine, 2Endowed Department of International Oral Health Science (affiliated with Department of Translational Research), Tsurumi University School of Dental Medicine, 3Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University

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JoVE 56319

 JoVE Bioengineering

Production and Targeting of Monovalent Quantum Dots

1Department of Otolaryngology, University of California, San Francisco, 2Department of Chemistry, University of California, Berkeley, 3Materials Science Division, Lawrence Berkeley National Laboratory, 4Department of Pharmaceutical Chemistry, University of California, San Francisco, 5Tetrad Graduate Program, University of California, San Francisco, 6Center for Systems and Synthetic Biology, University of California, San Francisco, 7Chemistry and Chemical Biology Graduate Program, University of California, San Francisco


JoVE 52198

 Science Education: Essentials of Environmental Microbiology

Detecting Environmental Microorganisms with the Polymerase Chain Reaction and Gel Electrophoresis

JoVE Science Education

Source: Laboratories of Dr. Ian Pepper and Dr. Charles Gerba - Arizona University
Demonstrating Author: Bradley Schmitz

Polymerase chain reaction (PCR) is a technique used to detect microorganisms that are present in soil, water, and atmospheric environments. By amplifying specific sections of DNA, PCR can facilitate the detection and identification of target microorganisms down to the species, strain, and serovar/pathovar level. The technique can also be utilized to characterize entire communities of microorganisms in samples. The culturing of microorganisms in the laboratory using specialized growth media is a long-established technique and remains in use for the detection of microorganisms in environmental samples. Many microbes in the natural environment, while alive, maintain low levels of metabolic activity and/or doubling times and are thus referred to as viable but non-culturable (VBNC) organisms. The use of culture-based techniques alone cannot detect these microbes and, therefore, does not provide a thorough assessment of microbial populations in samples. The use of PCR allows for the detection of culturable microbes, VBNC organisms, and those that are no longer alive or active, as the amplification of genetic sequences does not generally require the pre-enrichment of microorga

 JoVE Immunology and Infection

Measurement of In Vitro Integration Activity of HIV-1 Preintegration Complexes

1Center for AIDS Health Disparities Research, Meharry Medical College, 2Department of Biochemistry and Cancer Biology, Meharry Medical College, 3School of Graduate Studies and Research, Meharry Medical College, 4Department of Microbiology and Immunology, Meharry Medical College, 5Tennessee Center for AIDS Research (TN-CFAR), Meharry Medical College


JoVE 54581

 JoVE Genetics

Bidirectional Retroviral Integration Site PCR Methodology and Quantitative Data Analysis Workflow

1UCLA AIDS Institute, University of California at Los Angeles (UCLA), 2Department of Microbiology, Immunology, & Molecular Genetics, University of California at Los Angeles (UCLA), 3Departments of Biomathematics and Mathematics, University of California at Los Angeles (UCLA), 4Personalized Genomic Medicine Research Center, Division of Strategic Research Groups, Korea Research Institute of Bioscience and Biotechnology, 5Department of Medicine, University of California at Los Angeles (UCLA), 6Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University (OSU)


JoVE 55812

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