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.
Low Hemoglobin Count. The red blood cells contain a protein called hemoglobin, also known as Hb or Hgb. This molecule carries oxygen from the lungs to the different parts of the body. A normal hemoglobin level is at 13.8 to 17.2 gm/dL of blood for males and 12.1 to 15.1 gm/dL of blood for females. Normal limits for children vary with their sex and age.