News tagged with immune cells

Resistance to last-line antibiotic makes bacteria resistant to immune system

Bacteria resistant to the antibiotic colistin are also commonly resistant to antimicrobial substances made by the human body, according to a study in mBio, the online open-access journal of the American Society for Microb ...

Diseases, Conditions, Syndromes created 7 hours ago | popularity 5 / 5 (1) | comments 0

New immune system discovered

(Medical Xpress)—A research team, led by Jeremy Barr, a biology post-doctoral fellow, unveils a new immune system that protects humans and animals from infection.

Immunology created 12 hours ago | popularity 4.6 / 5 (14) | comments 5 | with audio podcast

Do salamanders hold the solution to regeneration?

Salamanders' immune systems are key to their remarkable ability to regrow limbs, and could also underpin their ability to regenerate spinal cords, brain tissue and even parts of their hearts, scientists have ...

Medical research created 16 hours ago | popularity 4.9 / 5 (7) | comments 2 | with audio podcast

Novel mechanism allows Legionella to hide in body

(Medical Xpress)—The feared Legionella pneumophila is responsible for legionellosis, an infectious disease that can lead to pneumonia. To infect humans, this pathogen has developed a complex method that allows it to camouflage ...

Diseases, Conditions, Syndromes created May 20, 2013 | popularity not rated yet | comments 0

Immune protein could stop diabetes in its tracks

Melbourne researchers have identified an immune protein that has the potential to stop or reverse the development of type 1 diabetes in its early stages, before insulin-producing cells have been destroyed.

Immunology created May 20, 2013 | popularity 5 / 5 (5) | comments 0 | with audio podcast

Preventing blood poisoning

Peptide molecules derived from the body's natural immune system can help boost the body's defence against life-threatening blood poisoning, joint University research has uncovered.

Medical research created May 17, 2013 | popularity 4 / 5 (1) | comments 0 | with audio podcast

New drug may help immune system fight cancer

(HealthDay)—An experimental drug that taps the power of the body's immune system to fight cancer is shrinking tumors in patients for whom other treatments have failed, an early study shows.

Cancer created May 16, 2013 | popularity 5 / 5 (3) | comments 0 | with audio podcast

Stem-cell-based strategy boosts immune system in mice

Raising hopes for cell-based therapies, UC San Francisco researchers have created the first functioning human thymus tissue from embryonic stem cells in the laboratory. The researchers showed that, in mice, ...

Immunology created May 16, 2013 | popularity 4.8 / 5 (5) | comments 0 | with audio podcast

What role do processing bodies play in cell survival and protection against viral infection?

As scientists learn more about processing bodies (PBs), granules present within normal cells, they are unraveling the complex role PBs play in maintaining cellular homeostasis by regulating RNA metabolism ...

Medical research created May 16, 2013 | popularity 4 / 5 (1) | comments 0

Herpes infections: Natural Killer cells activate hematopoiesis

Infections can trigger hematopoiesis at sites outside the bone marrow – in the liver, the spleen or the skin. LMU researchers now show that a specific type of immune cell facilitates such "extra medullary" ...

Medical research created May 16, 2013 | popularity 5 / 5 (3) | comments 0

Endothelium, heal thyself: A fresh look at this resilient, adaptable tissue

(Medical Xpress)—The endothelium, the cellular layer lining the body's blood vessels, is extremely resilient. Measuring just a few hundred nanometers in thickness, this super-tenuous structure routinely ...

Medical research created May 16, 2013 | popularity 4 / 5 (2) | comments 1 | with audio podcast

Transplant experts challenge assumption, describe pathway that leads to organ rejection

Transplant researchers at the University of Pittsburgh School of Medicine challenge a long-held assumption about how biologic pathways trigger immune system rejection of donor organs in a report published online today in ...

Medical research created May 15, 2013 | popularity 4.8 / 5 (4) | comments 0 | with audio podcast

Scientists develop 'magic bullet' nanomedicine for Acute Lung Injury

Researchers at Queen's University Belfast have devised a 'magic bullet' nanomedicine which could become the first effective treatment for Acute Lung Injury or ALI, a condition affecting 20 per cent of all patients in intensive ...

Medical research created May 15, 2013 | popularity 4 / 5 (1) | comments 0

Women's immune systems remain younger for longer

Women's immune systems age more slowly than men's, suggests research in BioMed Central's open access journal Immunity & Ageing. The slower decline in a woman's immune system may contribute to women living longer than men. ...

Immunology created May 14, 2013 | popularity not rated yet | comments 0

A new 'on' signal for inflammation

(Medical Xpress)—Inflammation is an important response in the body - it helps you to kill off invaders such bacteria that could cause a harmful infection. But if it's chronic or uncontrolled, inflammation can also cause ...

Inflammatory disorders created May 14, 2013 | popularity not rated yet | comments 0 | with audio podcast

White blood cell

White blood cells (WBCs), or leukocytes (also spelled "leucocytes"), are cells of the immune system defending the body against both infectious disease and foreign materials. Five different and diverse types of leukocytes exist, but they are all produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell. Leukocytes are found throughout the body, including the blood and lymphatic system.

The number of leukocytes in the blood is often an indicator of disease. There are normally between 4×109 and 1.1×1010 white blood cells in a litre of blood, making up approximately 1% of blood in a healthy adult. An increase in the number of leukocytes over the upper limits is called leukocytosis, and in leukopenia, this number is much lower than the lower limit. The physical properties of leukocytes, such as volume, conductivity, and granularity, may change due to activation, the presence of immature cells, or the presence of malignant leukocytes in leukemia.

For more information about White blood cell, read the full article at Wikipedia.
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