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.
While influenza and the common cold are both caused by respiratory viruses, flu symptoms are significantly more severe. Although both illnesses can produce runny or stuffy noses and coughs, flu symptoms often also include high fevers (over 102Âº F), body aches, sore throat, vomiting and diarrhea.