blood 2 2

Tag: "blood" at biology news

Mitochondrial DNA mutations play significant role in prostate cancer

...e COI gene in 260 prostate cancer tissue samplesor blood cells from patients with confirmed cancer who had undergoneradical prostatectomies between 1995 and 2002, and 54 tissue samplesfrom patients who had prostate biopsies but were found to be cancerfree. Twelve percent of all the prostate cancer samples ...

Gene therapy converts dead bone graft to new, living tissue

...paints it with the genetically modified virus. New blood vessels begin to grow around and into the bone splint, stripping it down in times when the body needs the calcium, and rebuilding it when calcium levels rise. The bone that is rebuilt is now fully the patient's own, as if the dead bone were a house b...

Antibiotic Resistant Bacterium Uses Sonar-like Strategy to “See?Enemies or Prey

...the environment near thebacterium, such as a human blood cell. They discovered how thesebacteria know when other cells are present, and respond accordingly.In the laboratory, the team found that Enterococcus releases twosubstances into the environment. One substance sticks to foreign cells.The second subst...

Jefferson Virologists Coax HIV Out of Hiding

...an Virologyand Biodefense, and his co-workers took blood cells from HIV-infectedpatients who had been takin...been seen before. It’s probably asub-population of blood cells, lymphocytes not stimulated by IL-2 orOKT3. There could be other reservoirs as well.?Ultimatel...

Novel Therapy Tested in Mice Could Chase Away Cat Allergies

... Dr. Saxon and his colleagues first tested GFD in blood donated by people allergic to cats. They cultured blood cells with either GFD or with a purified human antibody as a control. Then they added the cat protei...

Sea skate experiment sheds light on human cell transport

...or, Goldstein conducted an experiment with the red blood cells of skates to understand how these skinny, gr...: Our cells would take in too much water, diluting blood and other body fluids and rapidly causing death. So how do skates do it? Goldstein and Musch learne...

Mouse brain tumors mimic those in human genetic disorder

...model, the team made two importantdiscoveries: New blood vessels and immune system cells may be essentialto...rain. Butit was unclear whether the development of blood vessels and recruitmentof microglia helped trigger tumor formation or if they appeared onlyafter the...

First-ever Compounds To Target Only Metastatic Cells Are Highly Effective Against Breast, Prostate, And Colon Cancers

...is without affecting primary tumor cells, or their blood supply," Dr. Huang said. "To our knowledge, that's a real first." Exact mechanisms remain unclear. "Obviously, these compounds are targeting some step in the cell-migration process," Dr. Huang said. The activity of a migration-linked protein called...

Genetically modified natural killer immune cells attack, kill leukemia cells

...nt for acute lymphoblastic leukemia (ALL) or other blood cancers. Results of the St. Jude study are publis...ions of NK cells, the team started with samples of blood containing a variety of different immune system cells. They placed this sample into a dish containin...

Scientists develop new color-coded test for protein folding

...ify antibodies and other signs of infection in the blood stream. Over the next few months, he and his colleagues plan to re-do the experiment using other protein molecules. ...

Placenta Is A Rich Source Of Blood Stem Cells

...urprising finding about embryonic development: the blood system begins to form not only in the embryo itsel...ry early in development, are able to generate more blood stem cells and can give rise to a complete blood system when transplanted into an adult. Unlike othe...

Open microfluidic and nanofluidic systems

..., they could provide fast and detailed analysis of blood samples in the physician's office without the need to wait several days before the sample has been returned from specialized laboratories. Other applications include customized chips for space travel in order to monitor microbes inside spacecraft or ...

Researchers discover molecule that causes secondary stroke

...nown as cerebral vasospasm. A constriction of the blood vessels in the brain, cerebral vasospasm usually occurs three to 10 days following a massive brain bleed known as hemorrhagic stroke. Sixty percent of patients who survive the initial stroke develop vasospasm, and 40 percent of them die from it. Vas...

Study shows nanoshells ideal as chemical nanosensors

...dly chemical agent."About 1/20th the size of a red blood cell, nanoshells are about thesize of a virus. They are ball-shaped and consist of a core ofnon-conducting glass that is covered by a metallic shell, typicallyeither gold or silver. The metal shell "captures" passing light andfocuses it, a property t...

Studies reveal methods viruses use to sidestep immune system

...ransmitted primarily through intravenous drug use, blood transfusions or blood products, as well as through sexual contact and is the leading cause of cirrhosis and liver cancer. ...

DNA Recombination and Repair—A New Twist to RecA Function

... 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 evidence ...

New protein discovered by Hebrew University researchers

...selective penetration is based onthe fact that the blood vessels which feed tumors are considerably morepor...rying the drug would invade only the tumor-feeding blood vessels andnot normal ones.More recently, the three-dimensional structure of the protein wasdecipher...

NC State scientist finds soft tissue in T. rex bones

...le, and microscopic interior structures resembling blood vessels and even cells are still present. In a pa...hat, when examined microscopically, seemed to show blood vessels, osteocytes, or bone building cells, and other recognizable organic features. Since current...

The death of a very special chimpanzee

...selective penetration is based onthe fact that the blood vessels which feed tumors are considerably morepor...rying the drug would invade only the tumor-feeding blood vessels andnot normal ones.More recently, the three-dimensional structure of the protein wasdecipher...

Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation

...antity of a certain type of immune cell DNA in the blood could help physicians predict whether a bone marro...nts succeed, the donated stem cells repopulate the blood with healthy red and white cells. The St. Jude team showed that the more copies of tiny rings of DN...

1 2 3 4 5 6 7 8 9 10