Uncategorized
- Health & Medicine
Blood Booster: Growth signal shifts cord stem cells into high gear
A protein called Delta-1 stimulates stem cells in umbilical cord blood to proliferate in a lab dish, attach well to bone marrow when implanted into mice, and even proceed to the animal's thymus to become T cells.
- Earth
Air-Pollution Pileup: Mediterranean endures emissions from afar
Although most Mediterranean countries aren't big polluters, the area is a crossroads for pollution-carrying air currents from Europe, Asia, and North America.
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Outmuscled: Muscles, not nerve cells, fail in old worms
In aging worms, the nervous system stays intact but muscles don't.
- Astronomy
Cloudy Findings: A new population shows up in the Milky Way
A radio telescope has detected a previously unknown population of hundreds of hydrogen clouds in the gaseous halo that surrounds the disk of our galaxy.
