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.
It can cause mild to severe illness, and at times can lead to death. The flu is different from a cold. The flu usually comes on suddenly. People who have the flu often feel some or all of these symptoms: 1  Fever* or feeling feverish/chills. 2  Cough. 3  Sore throat. 4  Runny or stuffy nose. 5  Muscle or body aches.6  Headaches.t can cause mild to severe illness, and at times can lead to death. The flu is different from a cold. The flu usually comes on suddenly. People who have the flu often feel some or all of these symptoms: 1  Fever* or feeling feverish/chills. 2  Cough. 3  Sore throat. 4  Runny or stuffy nose. 5  Muscle or body aches.