News tagged with immune cells

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 May 20, 2013 | popularity 4.8 / 5 (26) | comments 8 | 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 May 20, 2013 | popularity 4.9 / 5 (7) | comments 4 | with audio podcast

Vaccine blackjack: IL-21 critical to fight against viral infections

(Medical Xpress)—Scientists at Emory Vaccine Center have shown that an immune regulatory molecule called IL-21 is needed for long-lasting antibody responses in mice against viral infections.

Immunology created May 23, 2013 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Research shows how immune system peacefully co-exists with 'good' bacteria

The human gut is loaded with commensal bacteria – "good" microbes that, among other functions, help the body digest food. The gastrointestinal tract contains literally trillions of such cells, and yet the ...

Medical research created May 22, 2013 | popularity 5 / 5 (4) | comments 0 | with audio podcast

Fast-acting mothers' milk for healthier babies

Human breastmilk responds quickly to protect the child when there is an infection in mothers or babies, according to new international research led by The University of Western Australia.

Immunology created May 23, 2013 | popularity 5 / 5 (1) | 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

Anti-CD47 antibody may offer new route to successful cancer vaccination

(Medical Xpress)—Scientists at the School of Medicine have shown that their previously identified therapeutic approach to fight cancer via immune cells called macrophages also prompts the disease-fighting killer T cells ...

Cancer created May 21, 2013 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Monoclonal antibody appears effective and safe in asthma Phase IIa trial

A novel approach to obstructing the runaway inflammatory response implicated in some types of asthma has shown promise in a Phase IIa clinical trial, according to U. S. researchers.

Diseases, Conditions, Syndromes created May 21, 2013 | popularity 5 / 5 (1) | comments 0

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 May 21, 2013 | popularity 4.5 / 5 (2) | comments 0

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

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

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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