Origin, development and functions of blood cells. Structure and function of red blood cells. Synthesis and breakdown of haemoglobin. Methods of Haemoglobin estimation. Methods of cell counting. Absolute values. Introduction to Haemostasis. Principle and mode of action of common anticoagulants. Principle of Haematological stains. Simple tests used in blood coagulation investigations. Blood films - normal and abnormal Hemochromatosis and related storage disorders.