Immunology

Immunology: White blood cells show their stripes

For the human immune system to work effectively, the body must be able to distinguish invading pathogens, such as fungi and bacteria, from its own healthy tissue. A group of white blood cells known as dendritic cells (DCs) ...

Neuroscience

Stem cells may do best with a little help from their friends

Like volunteers handing out cups of energy drinks to marathon runners, specially engineered "helper cells" transplanted along with stem cells can dole out growth factors to increase the stem cells' endurance, at least briefly, ...

Immunology

Reassigning cells to fight infection

Just as a uniform helps distinguish a soldier from a police officer, scientists use proteins that immune cells wear on their surfaces to determine their job in the body. T cells, for example, that display the CD8 protein ...

Immunology

How the immune system positions its gatekeepers

(Medical Xpress)—For an immune response to get underway, an invading microbe must first be halted in the spleen, and then digested by immune cells known as 'dendritic cells', which guard specific portals. Australian scientists ...

Arthritis & Rheumatism

New strategy prevents rheumatoid arthritis in mice

Dana-Farber Cancer Institute scientists have demonstrated a new strategy for treating autoimmune disease that successfully blocked the development of rheumatoid arthritis in a mouse model. They say it holds promise for improved ...

HIV & AIDS

How immune cells defend themselves against HIV

A team of scientists led by virologists Prof. Oliver T. Fackler and Prof. Oliver T. Keppler from Heidelberg University Hospital have decoded a mechanism used by the human immune system to protect itself from HIV viruses. ...

Medical research

A new starring role for astrocytes

Astrocytes, previously thought of as helper cells for neurons, have recently been shown to send signals themselves. The signals are chemical not electrical and astrocytes send them to neurons, vascular cells and other ...

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