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Tag: "lining" at biology news

Cellular message movement captured on video

... their most recent study from the inner membranous lining of a cow aorta. They added genetically engineered proteins tagged with red and green fluorescence markers to the bovine aortic endothelial cells, grew them in tissue culture, and filmed them while they passed fluid across the cells’ surface in a simu...

Massive herds of animals found to still exist in Southern Sudan

...t circumstances, disappear. Ironically, the silver lining to this violent time in Sudan has been the animals flourishing.” “Numerous threats in this post-war era face the region, including an enormous amount of extensive seismic exploration for oil in the Sudd that is harming the environment,” added Elka...

Nanotextured implant materials: blending in, not fighting back

...ells." Normal healthy blood vessels have a thin lining of specialized cells called the endothelium, surro...proteins collagen and elastin make up much of this lining and create a texture of fine nanoscale bumps on the inside of the blood vessel. This contrasts stron...

Synthetic peptide targets latent papilloma virus infections

...lls of the epithelial tissue, such as skin and the lining of the vagina and cervix, and spreads as these cells divide. The UC Berkeley team created a protein fragment, or peptide, that successfully prevents the virus from hitching a ride on a cell's chromosomes as the cell divides. If such a peptide - or ...

Cancer-killing invention also harvests stem cells

...ion of blood cells to the vascular wall, the inner lining of the blood vessels. During inflammation, the vascular wall presents surface selectins that adhere specifically to white blood cells. These selectins cause the white blood cells to roll slowly along the vascular wall, seeking signals that tell the...

Chemo combination improves survival in asbestos-related cancer

...e but aggressive form of cancer that occurs in the lining of the lungs, heart and abdomen, is associated with exposure to asbestos. There is no known cure. In the study, patients receiving pemetrexed and cisplatin ?along with the vitamin supplements folic acid and B12 ?survived nearly three months longer...

Wheat can fatally starve insect predators

...roduces proteins that appear to attack the stomach lining of a crop-destroying fly larvae so that the bugs s... probably damages the larvae's chitin-rich mid-gut lining so that it can't absorb nutrients from the plant, causing the insects starve, Williams said. Some...

Scientists sequence genome of parasite responsible for common sexually transmitted infection

...hat propel its movement. Once it attaches to cells lining the host's urinary or genital tract, it flattens out and begins to ingest the cells, as well as white and red blood cells, causing direct damage to the urinary and vaginal tissues and resulting in inflammation. T. vaginalis also consumes bacteria tha...

Homing pigeons get their bearings from their beaks

...etite were found in sensory dendrites² of the skin lining the upper beak of homing pigeons. This research project found that these dendrites are arranged in a complex three-dimensional pattern with different spatial orientation designed to analyze the three components of the magnetic field vector separatel...

Twin studies reveal genetic components leading to cardiac and kidney disease

...ct of genetics on the endothelium, the single-cell lining of blood vessels. Endothelial function, or dysfunction, is the basis of every common vascular disease, such as heart attack or stroke. "When blood vessels stop contracting and relaxing properly, it is the first indication of vascular dysfunctio...

Researchers discover new details about HIV-1 entry and infection

...s. The researchers separated and removed the outer lining of vaginal cells, which serves as the first barrier to the virus. The isolated preparation of intact, viable, vaginal epithelium permitted examination of immune cells that normally migrate out of the vaginal epithelium into deeper tissues shortly aft...

Napoleon's mysterious death unmasked, UT Southwestern researcher says

... of arsenic poisoning, such as hemorrhaging in the lining inside the heart, and no skin, lung or bladder cancers were present. Gastric cancer was more likely at fault, Dr. Genta said. Other scholars have recently found that the plump emperor lost at least 20 pounds in the last six months of his life, a s...

Nanoparticles for delivery of prostate cancer treatment

...zes the receptor tissue factor (TF) found on cells lining the inner surface of blood vessels in tumors but not in normal tissues. The Icon binds to TF more strongly and specifically than a natural antibody. Because the Icon acts through the blood, it can reach metastatic tumors throughout the body, which is...

Heart smart: new drug improves blood flow

... they also interfere with the ability of the cells lining arteries to control the contraction and dilation o... get blocked." When a blockage occurs, the cells lining the arteries produce nitric oxide to signal to the arterial muscles that they need to dilate the art...

Early HIV treatment fails to restore memory T cells

... In particular, the memory cells in the intestinal lining are decimated within days, while the T cells usually measured in the blood fall much more gradually, typically over several years. Although T cells in the blood can return and remain at normal levels when HIV infection is treated with antiviral drugs...

HIV-1 kills immune cells in the gut that may never bounce back

...ection period helped restore these cells to the GI lining the way it restored them to the blood itself. I...nd their collaborators determined that the mucosal lining of the GI tract carried a disproportionately heavy viral load. That means that the initial loss of C...

Ghengis Khan wonder berry could conquer heart disease

...When LDL cholesterol is oxidized, it sticks to the lining of blood vessels. Consuming the berries in food or drinks is expected to prevent the arteries from clogging up. Arumughan is confident that this technology had great potential, saying "No previous report has shown efficiency matching ours". Arumug...

Heavy smoking cuts women's chance of pregnancy -- even with donated oocytes

...avy smoking disrupts the stability of cells in the lining of the uterus differently in some women to others ...ile studying differences in gene expression in the lining of the uterus of heavy smokers who fail to get pregnant and those whose have twins. But, for now,...

Molecules in blood foretell development of preeclampsia

...the blood vessels of substances needed to keep the lining of the blood vessels healthy. Deprived of these essential substances, the cells lining the blood vessels begin to sicken and die. As a result, the blood pressure increases, and the blood...

Environmental toxins may cause body's defenses to worsen lung disease

... the body, continually survey the epithelial cells lining the lungs to identify and destroy diseased cells. If the lymphocyte recognizes the tissue, Borchers explains, it simply continues its survey for problems. But if the cell receives a signal that the tissue is infected, it will automatically destroy it...

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