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What is oxygen? Oxygen is a gas that your body needs to work properly. Your cells need oxygen to make...

Asthma is a chronic respiratory disease. In current medicine, it is a disease that cannot be cured completely. But if...

Pregnant women, especially those after six months of pregnancy, sometimes have chest tightness, shortness of breath, rapid heartbeat, high blood...

I. What is oxygen dependence The dependence refers to dependence on a certain drug, especially drugs that act on the...

Oxygen is necessary for everyone's survival. Only when the human body gets sufficient oxygen, nutrients can be oxidized and converted...