The following vendors develop and/or market bioluminescence assay kits, products, and instrumentation for a variety of research and clinical laboratory uses. For more information about products, services, and prices, please contact these companies directly. Accurate Chemical and Scientific Corp. 300 Shames Dr. Westbury, N.Y. 11590 (800) 645-6264 - Fax: (516) 997-4948 Analytical Luminescence Laboratory 11760 Sorrento Valley Rd., S

The following vendors develop and/or market bioluminescence assay kits, products, and instrumentation for a variety of research and clinical laboratory uses. For more information about products, services, and prices, please contact these companies directly. Accurate Chemical and Scientific Corp. 300 Shames Dr. Westbury, N.Y. 11590 (800) 645-6264 - Fax: (516) 997-4948 Analytical Luminescence Laboratory 11760 Sorrento Valley Rd., S

THE CULTURE WITHIN:Photo courtesy of Drs. C.C. Uphoff and H.G. Drexler, DSMZ-German Collection of Microorganism and Cell Cultures, Braunschweig, GermanyHeLa cell line infected with Mycoplasma hyorhinis. Scanning electron micrograph of critical point-dried cell culture grown on cover slips. Note the loop- and rod-like mycoplasmas attached to the host cell membrane. Smaller web-like structures on the cell surface represent microvilli of the cell. Original magnification 3,000×.Mycoplasmas have

Biologists are constantly seeking more sensitive assays to detect the presence of organisms or telltale DNA, RNA, and proteins. Although radioactive tags incorporated into the target itself (or into a complementary strand)-and later detected by Geiger counters or film exposures-have traditionally given good sensitivity, the problems of waste disposal and laboratory monitoring have driven a search for alternative tags that have radioactivity's sensitivity but avoid its hazards. Fluorescent tags-

Suppliers of Reporter Assay Screening Systems Courtesy of Applied BiosystemsTarget practice: Researchers can employ reporter assays to study a variety of cellular processes. Rarely is the product of a gene readily distinguishable from the myriad mRNA and protein complements that exist in a cell at any point in time. But researchers can skirt this obstacle by placing a "reporter gene" under the same controls as the gene of interest. Reporter genes have easily measurable phenotypes that form th

"Lots of companies come out with media or reagents for this or that, and make a big splash, but they're all basically derivatives of traditional products," says Hayden Coon, a former National Institutes of Health re-searcher who is the founder of Human Cell Therapies Inc. of Chebeague Island, Maine. Advanced Biotechnologies Inc. Columbia, MD American Qualex Antibodies La Mirada, CA American Type Culture Collection (ATCC) Rockv

"Lots of companies come out with media or reagents for this or that, and make a big splash, but they're all basically derivatives of traditional products," says Hayden Coon, a former National Institutes of Health re-searcher who is the founder of Human Cell Therapies Inc. of Chebeague Island, Maine. Advanced Biotechnologies Inc. Columbia, MD American Qualex Antibodies La Mirada, CA American Type Culture Collection (ATCC) Rockv

Current methods to detect infections of the novel coronavirus rely on identifying particular genetic sequences, but new assays are being developed to meet the growing demand for rapid answers.

This year’s crop of winning products features many with a clinical focus and others that represent significant advances in sequencing, single-cell analysis, and more.

Commercial kits use fluorescent beads to probe dozens of cytokines in one reaction.