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.
Updated February 28, 2017. Hemoglobin is a protein that is contained within red blood cells (RBCs). Hemoglobin is the part of the red blood cell that carries oxygen to, and carbon dioxide away from, the cells in the body. Without the right amount of hemoglobin in the red blood cells, the cells of the body will not be able to receive enough oxygen.