Health

Tobacco smoke makes germs more resilient

The mouth is one of the "dirtiest" parts of the body, home to millions of germs. But puffing cigarettes can increase the likelihood that certain bacteria like Porphyromonas gingivalis will not only set up camp but will build ...

Cardiology

Study probes heart of synthetic heart valves

The quest for a synthetic heart valve that faithfully mimics the original is a step closer to its goal with the Rice University find that a natural polymer called hyaluronan, one of the chief components of skin and connective ...

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