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.
incubation period for flu. Influenza is a viral infection that affects your throat, nose and lungs. Commonly called the flu, influenza isn't the same as stomach flu viruses that produce symptoms such as vomiting and diarrhea. Most people recover from influenza on their own, but in some cases, it can lead to certain complications with life-threatening consequences.