starts to become denser and stronger by pulling back fibers. Retraction occurs because platelets pull the fibrin together and squeeze out the remaining fluid. This has the advantages of pulling the vessel walls close together at the site of the clot. Once hemorrhaging is stopped tissue repair then begins.
             3. Albumin is a simple protein found in almost all animal tissues. Different types of albumin are found in blood, muscle, bone, and other organs and systems. Albumin is a protein manufactured by the liver. Albumins normally constitute about 55% of the plasma proteins. They adhere chemically to various substances in the blood, amino acids, and thus play a role in their transport. Albumins and other proteins of the blood help a lot in regulating the distribution of water and maintenance of proper osmotic pressure in the body.
             4. Globulins are proteins found in the plasma component of blood. Among the most important are the immunoglobulins, the antibodies of
             the immune system. They are classified into
             five types based upon structure: IgA, IgD, IgE, IgG, and IgM. IgG or gamma globulin is the most common and forms about 70% of the immunoglobins in the blood. These antibody substances are produced as a protective reaction of the body's immune system to the invasion of disease-producing organisms. Injections of gamma globulin are used to create a rapid but temporary immunity in patients who have been exposed to certain diseases.
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