Medical research

Creating blood vessels on demand

When organs or tissues are damaged, new blood vessels must form as they play a vital role in bringing nutrients and eliminating waste and it is necessary for organs and tissues to regain their normal function. At present, ...

Immunology

Gut immune cells play by their own rules

Only a few vaccines—for example, against polio and rotavirus—can be given orally. Most must be delivered by injection. Weizmann Institute of Science researchers suggest this may be, in part, because the training program ...

Diseases, Conditions, Syndromes

Understanding and preventing gangrene

Dear Mayo Clinic: I have heard that a stubbed toe can lead to gangrene in some individuals. Is that true? What are the signs of gangrene, and how can it be avoided?

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