The body's initial immune response to an infection, an outpouring of the compound interleukin-12, may trigger autoimmune disease by activating immune cells that recognize the body's own molecules.
Researchers have fabricated a tiny optical device called a resonator, which can channel photons from one path to another.
Microscopic spheres of tungsten disulfide show promise as a solid lubricant for machine parts.
Macaque monkeys at the bottom of the social pecking order are especially susceptible to a coldlike viral infection.
A semi-autonomous rover embarks on a 200-kilometer trip across Chile's Atacama Desert.
Astronomers have for the first time detected supernova remnants that are colliding.
Melanoma sometimes lies dormant in a person for decades before reemerging.
Estrogen replacement therapy has been linked to a reduced risk of Alzheimer's disease, and a large study suggests that it reduces deaths from heart disease.
Brewers yeast may once have had more than double the number of genes it has today.
Researchers have finally identified a protein component of the enzyme telomerase essential to its activity in tumors.
Researchers have created mice whose genome contains functioning fragments of human chormosomes, some containing about 1,000 genes.
A purified protein derived from cow eyes may enable those suffering from uveitis to reduce their dependence on steroids.
Genetic mutations in either of two genes are responsible for an eye disease known as Meesmann's corneal dystrophy.
A new software package could shave months to years off the time it takes to identify environmentally benign solvents.
The federal program is slow to evaluate and clean up hazardous waste sites, while new data links birth defects to living within a quarter mile of a site.
In a demonstration of short-term memory, a mathematical model representing a type of diffusion shows an ability to remember, then forget a sequence of impulses.
Computer simulations of a partially ionized plasma in a collapsing gas bubble reveal that accelerated electrons produce the brilliant flash characteristic of an effect called sonoluminscence.
Dendrimers branch out into the electronic world
Polymer molecules with branches emanating from a central core can be fabricated into magnets, light-emitting diodes, liquid crystals, lasers, and antennas.
Two breast cancer genes may safeguard DNA
Researchers now suspect that the BRCA1 and BRCA2 genes play a role in a cell's ability to detect or repair damaged DNA .
Our Weekly Listing of New Publications
A Selection from Letters to the Editor