Each subunit contains an iron containing pigment (heme) and a protein (globulin). There are two types of subunits, alpha and beta. Each gram of hemoglobin can carry 1.34 ml of oxygen. The oxygen carrying ability of blood is directly proportional to its hemoglobin concentration.
Flu (Influenza) The flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness. It can also cause death in severe cases. The flu can affect your lungs when you have asthma. It can cause inflammation (swelling) and narrowing of your airways.
The flu is a respiratory illness that is caused by a virus known as the influenza virus. The flu isnât the same viral illness as a cold, but they share some of the same symptoms. Colds are less likely to cause serious complications, especially for the elderly, the very young and those who also suffer from chronic illnesses. The flu will cause fever and will also weaken the immune system, leaving it vulnerable to other more serious infections. Know the serious flu symptoms that require immediate medical attention.