white blood cells

(Newser) - Scientists in California believe they have a tip for those with weakened immune systems: Fast for three days. The brief period "flips a regenerative switch" in the body, the University of Southern California researchers say, via the Telegraph : "It gives the 'OK' for stem cells to go...

(Newser) - Apparently, the mere sight of a sick person can send your immune system into overdrive. In a fascinating new study, researchers asked a group of young adults to watch a slideshow of images showing people with all sorts of illnesses. They took blood samples from the subjects before and after...

(Newser) - Scientists have found a technique that could eliminate the need for transplant patients to endure a regimen of powerful and side-effect-inducing anti-rejection drugs, the BBC reports. By mixing the patient's infection-fighting white blood cells with modified cells from the organ donor, the rejection process can be halted.