Blackbirds found to rest earlier at dusk when sick

A trio of biologists at Lund University in Sweden has found that blackbirds that feel ill tend to rest earlier at dusk than control birds. In their study, reported in the Proceedings of the Royal Society B, Rosie Lennon, ...

Study unlocks key to success of drug-resistant bacteria

Researchers have discovered how Gram-negative bacteria—which cause drug-resistant pneumonia, bloodstream infections, and surgical site infections in hospitalized patients—finish building a crucial component of their outer ...

Plants detect bacterial endotoxin in similar process to mammals

Similar to humans and animals, plants possess an innate immune system that protects them from invading pathogens. Molecular structures that only occur in pathogens enable their recognition and trigger the immune response. ...

Space experiment sheds light on immune struggles

A lab experiment that rode to space two years ago has offered new clues about why astronauts' immune systems struggle to perform in zero gravity, US military researchers said on Monday.

Lipopolysaccharide

Lipopolysaccharides (LPS), also known as lipoglycans, are large molecules consisting of a lipid and a polysaccharide joined by a covalent bond; they are found in the outer membrane of Gram-negative bacteria, act as endotoxins and elicit strong immune responses in animals.

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