Policing cells demand ID to tell friend from foe

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University of Pennsylvania scientists studying macrophages, the biological cells that spring from white blood cells to eat and destroy foreign or dying cells, have discovered how these “policemen” differentiate between friend and foe. The paper appears as the cover article in the March 10 edition of the Journal of Cell Biology.


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All News summaries for March 11, 2008

Oldest gorilla in captivity dies in Dallas at 55

Sep 05, 2008 | User rating: not rated yet
(AP) -- The oldest gorilla in captivity, a 55-year-old female named Jenny, has died at the Dallas Zoo - her home for more than half a century, a spokesman said Friday.

Study: Individual Personal Ties Strengthen Teams’ Overall Creativity

Sep 05, 2008 | User rating: not rated yet
(PhysOrg.com) -- With more employees working in teams, it’s critical for companies to find ways to enable these teams be more creative in their work.

Study: Behavior of Online Reviewers Affects Their Credibility

Sep 05, 2008 | User rating: not rated yet
(PhysOrg.com) -- Consumers increasingly rely on recommendations in online forums, such as Amazon.com and Angieslist.com, when deciding which products and services to buy. But, in most cases, they've never met the posters ...

Dental fillings without gaps

Sep 05, 2008 | User rating: not rated yet
Tooth cavities are usually closed with plastic fillings. However, the initially soft plastic shrinks as it hardens. The tension can cause gaps to appear between the tooth and the filling, encouraging more ...

Tracking the reasons many girls avoid science and math

Sep 05, 2008 | User rating: not rated yet
Most parents and many teachers believe that if middle-school and high-school girls show no interest in science or math, there's little anyone can do about it. New research by a team that includes vocational ...
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