FISH BREATHE through their gills. But some also breathe through their bottoms. Vertebrate guts are abundantly supplied with blood vessels, to enable them to absorb digested food. That means they can, ...

Oxygen is one of the most important treatments available to patients with cardiopulmonary disease. Here’s an updated guide to the equipment. As primary-care providers have become increasingly adept at ...

A FIFTH memorandum in the Emergency Medical Services Series has been issued by the Ministry of Health entitled “Oxygen Administration—Indications, Methods and Types of Apparatus” (H.M. Stationery ...