Lymph nodes are small organs that are distributed throughout the body and drain lymph fluid from the tissues. Immune cells reside in lymph nodes and survey the lymph for signs of infection. If a ...

Cellular interactions between T cells and dendritic cells (DCs) in lymph nodes are crucial for the initiation of adaptive cell-mediated immunity. Two-photon imaging offers the opportunity to track ...

“I saw in Louisiana a live-oak growing / All alone stood it, and the moss hung down from the branches.” —Walt Whitman, Leaves of Grass, 1860-61 More than 150 years after Whitman wrote those lines, the ...

From Estonia to Antarctica, this once-pagan symbol has taken on many strange forms. In December 1848, an illustration showed Queen Victoria, Prince Albert, and their children admiring a Christmas tree ...

The New York City holiday institution has only gotten bigger and brighter since its debut on Christmas Eve 1931 Kate Hogan was Director of Digital Specials and Features at PEOPLE. She started at ...

The best artificial Christmas trees dazzle your home without the cleanup and maintenance required of a real tree. They also offer features no live tree can offer: the ability to re-use your tree year ...

This viewpoint is not to be missed as it offers a sweeping overview of the Coachella Valley from an elevation of 5,185 feet. A 0.2-mile loop trail leads up to the ridge, where you'll be able to look ...