Pathology. Pathology is the precise study and diagnosis of disease. The word pathology is from Ancient Greek ÏÎ¬Î¸Î¿Ï, pathos which may be translated into English as either experience or suffering. and -Î»Î¿Î³Î¯Î±, -logia, An account of or the study of.
Red cells contain a special protein called hemoglobin, which helps carry oxygen from the lungs to the rest of the body and then returns carbon dioxide from the body to the lungs so it can be exhaled. Blood appears red because of the large number of red blood cells, which get their color from the hemoglobin.
  Answer   Hemoglobin is the protein molecule in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues â¦ to the lungs. The iron contained in hemoglobin is responsible for the red color of blood.  Answer   your red blood count.bout 70 percent of your body's iron is found in the red blood cells of your blood called hemoglobin.iron is a component of certain proteins, essential for respiration and energy metabolism so it is also a source of iron compound.