Skip to Content Skip to Content

Research

Reset All Filters
1627 Results
The immune system does battle in the intestines to keep bacteria in check
A microscopic image stained to show cells in the intestines

(Image: Courtesy of the Brodsky Laboratory)

The immune system does battle in the intestines to keep bacteria in check

New research from Penn’s School of Veterinary Medicine demonstrates that Yersinia pseudotuberculosis, a relative of the bacterial pathogen that causes plague, triggers the body’s immune system to form lesions in the intestines called granulomas.

Katherine Unger Baillie

One study said happiness peaked at $75,000 in income. Now, economists say it’s higher—by a lot

One study said happiness peaked at $75,000 in income. Now, economists say it’s higher—by a lot

A study co-authored by Matthew Killingsworth of the Wharton School, PIK Professor Barbara Mellers, and a team from Princeton found that happiness improves with higher earnings, up to $500,000 a year, except for those who were “rich and miserable” for other reasons.