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Tag: "white" at biology news

Source of molecular triggers in cutaneous T cell lymphoma identified

...most common adult malignancy of T lymphocytes, the white blood cells of the immune system. Finding CTCL triggering factors has been a major goal of Richard L. Edelson, M.D., Director of the Yale Cancer Center, and professor and chair of dermatology at Yale, since he and his colleagues at the National Cance...

Emory Study Tests Bone Marrow Stem Cells to Improve Circulation in Legs

...luding incancer patients to increase the number of white blood cells to fightinfection after chemotherapy; ... a bone marrow transplant to increase thenumber of white blood cells. It is still considered experimental,however, for use to increase the level of EPCs in p...

Fox Chase Cancer Center scientists identify immune-system mutation

...mutation that keeps a mouse strain from developing white blood cells, or lymphocytes, called helper T cells...cell-mediated immunity) and also for helping other white blood cells (B cells, derived from bone marrow) generate antibodies against foreign agents that ente...

Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine

..., CLL was considered a uniform disease of immature white blood cells that didn't die, with the slow rise in... an accumulation of these immature and incompetent white blood cells. Scientists have since discovered that CLL cells do indeed turn over, with the accumulat...

The secret lives of whales

... ?thanks to Melville’s tale of Moby Dick, the rare white sperm whale. Female sperm whales feed in tropical regions while males travel globally and feed near the poles. “For example, of the roughly one million sperm whales killed by whalers in the Antarctic Ocean, only one was a female,?says Payne. Ocean A...

DNA Recombination and Repair—A New Twist to RecA Function

...lf can work as a motor: for instance, the march of white blood cells toward pathogens is powered by the growth of actin filaments pushing against the cells?membranes. In all cases, coherent motion implies a coordinated and polarized use of energy. Now, Julia Cox, Oleg Tsodikov, and Michael Cox present evi...

Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation

...he patients' own stem cells that produce cancerous white cells or faulty red cells and replace them with he...em cells repopulate the blood with healthy red and white cells. The St. Jude team showed that the more copies of tiny rings of DNA called signal-joint TRECs...

New insight into people who 'see' colors in letters and numbers

...ack letters or numbers--known as "graphemes"--on a white background. They chose those graphemes that the synesthetes reported elicited specific colors. They designed the experiment so that if the synesthetes really were seeing the colors, that color perception would help them distinguish shapes such as tri...

Plants defy Mendel's inheritance laws, may prompt textbook changes

...hildren, the buds become 1-millimeter-long, bright white flowers that fully opened and radiated out from the center of a cluster. "If you take this mutant Arabidopsis, which has two copies of the altered gene, let it seed and then plant the seeds, 90 percent of the offspring will look like the parent, but...

White blood cell waste disposal system plays critical regulatory role

...hese critical immune cells. Human neutrophils are white blood cells that are constantly being produced in the bone marrow and released into the blood stream where they migrate out of the blood and roam the body in search of potentially harmful foreign substances. Neutrophils have a short lifespan and ofte...

Falling ants glide back to trunk to avoid dangers of forest floor

...a bit more." By painting the ants' rear legs with white nail polish, he was able to track their fall and e...eotape the same species of ant in freefall, with a white sheet standing in for the tree trunk. Yanoviak's earlier observations combined with the videotaped ...

Ophthalmologists Use Artificial Silicon Retina Microchip To Treat Vision Loss

... procedure starts with three tiny incisions in the white part of the subject's eye, each incision no larger than the diameter of a needle. Through these incisions, the surgeons insert a miniature cutting and vacuuming device that removes the gel in the middle of the eye and replaces it with saline. They th...

Ophthalmologists implant five patients with artificial silicon retina microchip

... procedure starts with three tiny incisions in the white part of the subject's eye, each incision no larger than the diameter of a needle. Through these incisions, the surgeons insert a miniature cutting and vacuuming device that removes the gel in the middle of the eye and replaces it with saline. They th...

Surprising findings reported about iron overload

...n other racial/ethnic groups." He added that many white Alabamians have Celtic origins, with some counties...tosis or iron overload occur in 0.3-0.5 percent of white persons of northern, central, and western European descent. In fact, a health-screening program cond...

Great White shark evolution debate involves WSU Lake Campus geology professor

...ooth growth trajectories, while those of the great white and megladon are not similar. Analysis of both the root and entire tooth also shows a remarkable similarity in all four tooth positions under study for both the Great White and mako shark. Serration densities possess a strong similarity between the G...

New winter hulless barley has high protein

...stics such as higher protein content, quality, and white seed color. The Virginia Tech wheat cultivars "Tri...y products. The cultivar "Pearl" is the first soft white cultivar developed and released from the program. Production of such high-value specialty grains off...

Light therapy may combat fungal infections, new evidence suggests

...t box fitted with high-intensity, full-spectrum or white light bulbs. UV irradiation is also used to repigm...Yeast strains lacking one of those genes, known as white collar 1 (BWC1), mated equally well in the light or the dark, implicating that gene in the fungus' a...

New insight into regulation of blood stem cells

...iate into either red blood cells, various types of white blood cells, or platelets. The genes that control proliferation and differentiation have been difficult to study using traditional gene disruption methods because loss of genes thought to be critical for this process often results in embryonic death,...

Chemicals in tattoo inks need closer scrutiny

...ng three different brands of red, blue, yellow and white ink. Tattoo artists frequently mix inks to achieve the desired color, so the researchers selected their samples based on the most likely base colors. Because there have been no previous studies, they are using analytical techniques that can test for...

Protein That Promotes Survival Of Stem Cells Might Be Key To Poor Leukemia Prognosis

...cells (HSC) give rise to all of the body's red and white blood cells and platelets has now been discovered ...maintaining blood cells throughout life as red and white cells and platelets die and must be replaced. HSCs are also needed to rebuild the blood system of pa...

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