Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
New products in the field of spectroscopy include a fluorescence spectrophotometer for routine assays, ultraviolet/visible range systems, and ultra micro cells for 0.5 μl volume.
New products in the field of immunology include an interleukin-1 drug screening assay system, microplate washers and readers, radiolabelled interleukin-4, and a selection of monoclonal and polyclonal antibodies.
RNAs linked to the chemical nuclease 1,10-phenanthroline-copper cut double-stranded DNA of complementary sequence. This cleavage reaction is applicable to all sequences and can be used to measure the distance between marker genes in base pairs, map the size of a transcription unit and define positions of chromosomal breakpoints.
Featured this week — an epitope mapping system, an instrument for the purification of proteins, peptides and glycoproteins from complex mixtures by continuous elution electrophoresis and a radiolabelled ligand for brain research.
A computerized database, called TBASE, has been developed to organize and make available information on transgenic animals and targeted mutations by using resources at the Oak Ridge National Laboratory (ORNL) and Johns Hopkins University (JHU). The database is available through the JHU Computational Biology Gopher Server. To ensure that all interested users have access, several mechanisms will be installed to accommodate varying levels of telecommunication network connectivity.
Making a splash this week — a new fluorescence electrophoresis system for carbohydrate profiling and analysis, transcription kits for capped RNA and a computer-controlled electrophoresis system.
Cytotoxicity is defined as the in situ measurement of cellular function in response to a toxic substance. Cytotoxicity assays are widely used in drug screening and development research to minimize the number of compounds on which expensive mammalian animal model toxicology studies are performed.
Tools for the microbiologist featured this week include an all-in-one instrument for processing media and autoclaving labware, viral swab transport systems, a portable microplate reader, culture collections and safety videos.
Featured this week — antibody purification kits, a diode-array detector for liquid chromatography, software for chromatography applications, columns, media and a collection of catalogues for one-stop shopping.
Novel biochemical processes using magnetic particles have been automated to provide a robotic system to perform processes for large-scale shotgun sequencing.
Molecular research tools, gadgets and gismos featured this week include a new instrument for the real-time analysis of molecular interactions, an anitibody for cystic fibrosis research and a hand-held DNA sequence recorder.
This week's crop of new products from manufacturers in California includes a data acquisition system for the personal computer, an assortment of monoclonal antibodies and a UV-visible spectroscopy system
An image analysis software package for Windows, a microincubator, an imaging system for autorad analysis, image processing and analysis systems and scanning electron microscopes are featured this week.
Featured this week — an immunoglobulin binding protein, a chromosome enumeration system, a capillary electrophoresis system and columns, software, CD-ROMs and new product catalogues.
Magnetic bead capture utilizes biotin–streptavidin magnetic bead technology to isolate cDNAs rapidly from large genomic intervals, giving several thousand-fold enrichment of the selected cDNAs. The technique can allow parallel analysis of several large genomic segments of varying complexities and can be applied to the isolation of expressed sequences from various tissue sources.
Making a splash this week — a technical presentation graphics package, a plasmid drawing program, a troubleshooting program for HPLC, molecular modelling software and data acquisition products.
