While the negative effects of air pollution on human respiratory systems is well known, researchers from Ohio State University suspected that inhaling particulate may have some unexpected consequences that go much deeper. (treehugger.com)
A study published last March shows that avian flu strains can infect cells lining the human respiratory system, but they seem to have difficulty replicating. (discovermagazine.com)
Asthma is a disease of the human respiratory system in which the airways narrow, often in response to a «trigger» such as exposure to an allergen, cold air, exercise, or emotional stress. (sciencedaily.com)