St. Jude study solves mystery of mammalian ears
A 30-year scientific debate over how specialized cells in the inner ear amplify sound in mammals appears ...ters around outer hair cells, which are rod-shaped cells that respond to sound waves. Located in the fluid-filled part of the inner ear called the cochlea, t...New research identifies anti-viral protein that may predict who might be at risk to develop lupus
..., so that when the wrong stimulus comes along, the cells of the immune system begin making the autoantibodies and the person develops SLE. The researchers are now working to identify the other players that are involved in the progression of SLE. They hope that as they know more, they may be able to ident...Prenatal stress keeps infants, toddlers up at night, study says
...ay disrupt a childs formation of a bundle of nerve cells in the brain called the suprachiasmatic nucleus which act as a signaling system that tunes bodys internal clock. This signaling system helps to properly regulate daily rhythms of waking, sleeping, even hunger that is, if its formation has not been...New target for HIV/AIDS drugs and vaccine discovered
...atural killer cells). First, Nef hijacks dendritic cells (DCs) to upset the function of natural killer (NK)...nse against the immune system, Nef uses DCs and NK cells to create a microenvironment that actually makes it easier for HIV/AIDS to replicate. According to...Surprising new species of light-harvesting bacterium discovered in Yellowstone
...rom the environment, then DNA is isolated from the cells and sequenced by so-called shotgun sequencing on a...cial component of the machinery used by all living cells to manufacture proteins; and the gene for a protein called PscA, which is essential for converting l...Innovative research technique reveals another natural wonder in Yellowstone Park
...rom the environment, then DNA is isolated from the cells and sequenced by so-called shotgun sequencing on a very large scale. Analysis of the DNA sequences reveals what types of genes and organisms are present in the environment. Cab. thermophilum grows near the surface of the mats together with cyanobac...A friendly foe -- Bacteria residing in the gut boost immune response to tumors
...irst depletes the body of the population of immune cells known as lymphocytes and then involves the adoptive transfer of tumor-specific T cells to the patient. Lymphodepletion has previously been shown to improve the ability of tumor-specific T...JCI table of contents -- July 26, 2007
...irst depletes the body of the population of immune cells known as lymphocytes and then involves the adoptive transfer of tumor-specific T cells to the patient. Lymphodepletion has previously been shown to improve the ability of tumor-specific T......ind to specific counterparts while swimming in the cells thick, erratic molecular stew something like finding a friend in a Tokyo subway station during rush hour. In the classical view of molecular recognition, the binding molecules fit each other like a lock and key. Half a century of research has sh...... keeping abreast of current events in the world of cells and organisms, they employ reporter genes to 'broa...orts via MRI detection from the liver, endothelial cells and even during fetal development in pregnant mice, without the need for additional substances....Can the tonsils influence oral HIV transmission?
...st cross to come in contact with underlying immune cells for infection to occur. While the oral mucosal sur... the tonsils, which contain high numbers of immune cells that may be easily accessible to HIV. Researchers led by Dr. Sharon M. Wahl, of the National Insti...Boston Univeristy bioengineers devise 'dimmer swith' to regulate gene expression in mammal cells
... cell, but with the genetic switch turned off, the cells survived for weeks. When the researchers flipped the switch, toxin production was triggered and the cell died. They also showcased the switchs capability for delicately tuning gene expression, by installing it alongside a gene that leads to apopto...U-M team identifies gene that regulates blood-forming fetal stem cells
... public debate over federal research funding, stem cells are generally assigned to one of two categories: e...Michigan study adds to mounting evidence that stem cells in the developing fetus are distinct from both embryonic and adult stem cells. In the last several...MicroRNA works with Ago2 protein to regulate blood cell development
...em. This is a system where similar kinds of stem cells give rise to all the different types of blood cells in the body, so you can definitively address whether microRNAs are involved in the processes by whic...Scientists find stem cell switch
Scientists have discovered how plant stem cells in roots detect soil structure and whether it is f..., said Professor Dolan. As in humans, plant stem cells are the source of all growth. The defining characteristics of stem cells are that they are able to e...Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily
...at aids the understanding of why HIV enters immune cells with ease. The researchers found that after HIV do... molecules to recognize and communicate with other cells or get nutrients. Cells also communicate with one another via small, membrane-bound vesicles that co...Gene-transcription machinery seen poised for action, held in check until needed
...n. Data from other laboratories indicate that stem cells have many genes that may be poised in this way, ready to send the cells down various differentiation pathways to form different tissues. There are likely many vital cell fu...Air pollution link to clogged arteries
...teries, and diesel exhaust particles. They exposed cells that line human blood vessels (microvascular endothelial cells) to both exhaust particles and oxidised phospholipids, and measured the effect on genes by using microarray expression profiling. This allowed the identification of gene modules containin...UCLA study links air pollution to clogged arteries
...ollutants and oxidized fats and cultured them with cells from the inner lining of human blood vessels. A few hours later, the team extracted DNA from the cells for genetic analysis. We saw that the diesel particles and oxidized fats had worked in tandem to ....... Ten days after alcohol withdrawal, they examined cells in the lateral parietal cortex area, which is part...n inhibitory control, and identified live and dead cells with tissue stains. "At this one time point, which is the peak for cell death, we clearly see fema...