The battle between virus and host cell

When viruses enter the body, such as during an influenza or a gastrointestinal infection, the processes within the infected cells change: In the worst case, the virus takes the helm and reprograms the cell to its advantage. ...

Key acid-activated protein channel identified

Johns Hopkins researchers have discovered a long-sought protein, the proton-activated chloride channel (PAC), that is activated in acidic environments and could protect against the tissue-damaging effects of stroke, heart ...

How the snail's shell got its coil

If you look at a snail's shell, the chances are it will coil to the right. But, occasionally, you might find an unlucky one that twists in the opposite direction—as fans of Jeremy thelefty snail will remember, these snails ...

How the bumble bee got its stripes

Researchers have discovered a gene that drives color differences within a species of bumble bees. This discovery helps to explain the highly diverse color patterns among bumble bee species as well as how mimicry—individuals ...

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