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tag double helix developmental biology

A nude (hairless) mouse, typically used in biomedical and drug discovery research methods that rely on immunodeficient mouse strains.
Brush Up: Humanized Mice: More than the Sum of Their Parts
Deanna MacNeil, PhD | Aug 31, 2022 | 5 min read
Scientists study human health in vivo with modified mice that molecularly mimic human biology.
Science Museums Exhibit Renewed Vigor
Christine Bahls | Mar 28, 2004 | 10+ min read
Erica P. JohnsonApreschool girl with black braids presses a finger to a disk that twists a brightly lit DNA model, transforming its ladder shape into a double helix. Her head bops from side to side in wonder as the towering DNA coils and straightens. When a bigger boy claims her place, the girl joins meandering moms and dads with their charges as they twist knobs, open flaps, and simply stare at flashing helixes and orange information boards: all a part of the museum exhibit called "Genome: The
THE STATE OF LIFE SCIENCE
Dennis Meredith | Apr 1, 2007 | 8 min read
By Dennis MeredithTHE STATE OF LIFE SCIENCENorth Carolina combines academic, industrial, government, and private resources to drive research, development, and manufacturing A half century ago, the world was only beginning to grasp the stunning implications of Watson's and Crick's double-helix DNA structure. Amidst those earliest glimmerings of the genetic revolution, North Carolina was already laying the foundation for its 21st-century success in biotechnology. In 1959, however, the evidence o
Methylation: Gene Expression at the Right Place and Right Time
Nadia Halim | Dec 5, 1999 | 7 min read
Courtesy of Richard Roberts, New England BiolabsModel methylation reaction: Cytosine nucleotide (red) is flipped out of the DNA double helix by a methyltransferase (white), so it can be methylated. The end product after the methyl group has been transferred to the DNA is pictured in green. A tenuous link between DNA methylation and development has existed for several years. Now findings substantiate the connection. Researchers have found the first human diseases caused by defects in the DNA meth
Nonradioactive Probes Protect Scientists And Environment
Holly Ahern | Apr 29, 1990 | 5 min read
For many years, geneticists determined the genetic makeup of organisms by examining the physical characteristics of their offspring. But with the discovery of the structure of the DNA double helix, first published by James D. Watson and Francis H.C. Crick in 1953 (Nature, 171:964-7), the science of genetics was forever changed. Scientists soon developed techniques to study the genetic message found in all living cells at the molecular level. One of most important of these methods was the use of
Building Nanoscale Structures with DNA
Arun Richard Chandrasekaran | Jul 16, 2017 | 10+ min read
The versatility of geometric shapes made from the nucleic acid are proving useful in a wide variety of fields from molecular computation to biology to medicine.
People: USC Specialist In Craniofacial Molecular Biology Is Named As New Director Of National Institute Of Dental Research
Karen Young Kreeger | May 14, 1995 | 2 min read
COLLABORATIONS: Harold Slavkin observes that "the growth area for oral medicine is at the interface with other kinds of science. Harold Slavkin, director of the Center for Craniofacial Molecular Biology at the University of Southern California (USC) School of Dentistry and the George and Mary Lou Boone Professor of Craniofacial Molecular Biology, has been appointed director of the National Institute of Dental Research (NIDR). Slavkin, 57, will assume the position in July, replacing Harald Loe,
Beyond Film: Laboratory Imagers
Jorge Cortese | Apr 1, 2002 | 9 min read
Years ago, researchers had only one data-imaging option: autoradiography. These scientists tagged samples—whether nucleic acid, protein, cell, or tissue—with radioactive labels, and captured images on film. Safety concerns, convenience, and sensitivity, spurred the development of alternative techniques, and today, researchers can choose from a range of options, including fluorescence, chemifluorescence, and chemiluminescence, in addition to autoradiography. Fluorescence occurs when
Advances in the functional characterization of newly discovered microproteins hint at their diverse roles  in health and disease
The Dark Matter of the Human Proteome
Annie Rathore | Apr 1, 2019 | 10 min read
Advances in the functional characterization of newly discovered microproteins hint at diverse roles in health and disease.
Death Watch II: Caspases and Apoptosis
Jorge Cortese | Jun 24, 2001 | 10 min read
Caspase Related Reagents Courtesy of Bingren Hu, Queen's Medical Center, Hawaii. Provided by Cell Signaling TechnologyConfocal micrograph of double immunostaining for cleaved caspase-3 (green) and propidium iodide (red) in newborn rat brain tissue. This section shows control and transient cerebral ischemia. Editor's Note: This is the second article in our two-part series on cell death. The first part: J. Cortese, "Death watch I: Cytotoxicity detection," The Scientist, 15[5]:26, March 5, 2001.

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