Lucie C Valdez

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How T cells know an invader when they see one

Scientists are using X-ray technology to get a remarkably detailed look at the binding sites on T cells, the foot soldiers of the human immune system.<p>…

Immunotherapy

Why a MERS Vaccine Won't Be Easy

Economics and timing complicate vaccine research.<p>Two years ago, the virus didn't even have a name. A year ago it had infected roughly 50 people, half of whom died. Now, Middle East Respiratory Syndrome has been confirmed in more than 600 people, and killed nearly 30 percent of its …

Scientists Solved the Mystery of Why Rechargeable Batteries Go Bad

Every time you recharge your lithium-ion batteries, their storage capacity decreases just a little bit. That is why your mobile gadgets won't stay on …

Cynicism linked to greater dementia risk, study says

Your spouse "had to stay late at work" -- are you skeptical? Do you think your friend doesn't like you if he cancels dinner plans? Do you suspect that your co-worker is putting her ambitions ahead of the team?<p>Curmudgeons of the world, listen up: This line of negative thinking might actually hurt …

How brains light up when we reward and punish

In a neuroimaging study, scientists have found that having allegiances with people can affect feelings of empathy when punishing and rewarding others.<p>…

The Brain

Measles hits 20 year high in US, 'driven by unvaccinated people'

Measles cases have soared to a 20-year high in the US, with 288 cases reported since the beginning of the year — the most in a five-month period since 1994. Though measles was declared to be eliminated from the US in 2000, importation of the disease has continued, and in all cases this year where …