Take a deep breath. Now exhale. Congratulations! You've just done something completely ordinary, yet so mysterious that scientists still don't know everything about it. How oxygen and carbon dioxide ...

The influenza D virus that researchers say has been flying under the radar since its detection in animals in 2011 can vigorously make copies of itself in human cells and lung tissue samples, a new ...

Add Yahoo as a preferred source to see more of our stories on Google. The respiratory system is made up of several organs and structures, including the lungs, windpipe, diaphragm and alveoli. It is ...

Researchers have identified how a common bacterium is able to manipulate the human immune system during respiratory infections and cause persistent illness. Researchers from The University of ...

The cultures also make mucus and have cilia that beat very quickly. "Because the organization of these cells greatly resembles the cells found in human tissues, they are a relevant system that can be ...

Air pollution is a major risk factor for respiratory infections in children, with prenatal and postnatal exposure increasing vulnerability. Key pollutants include particulate matter, nitrogen oxides, ...

A virus that most physicians have never heard of can replicate inside human lungs. That is the central finding from recent ...