Blood groups – other blood groups e.g MNS, Duffy, Kell, Kidd etc. Grouping techniques and antibody screening, clinical significance, serostatus. Antenatal serology – screening and titration (quantitation) compatibility procedures – different methods, advantage and disadvantages, Blood transfusion reactions- causes and types; investigation. Risks attendant in blood transfusion – Diseases, analphylactic, haemolytic and allergic reactions. Screening of Donor blood for diseases. Compatibility procedures – advantages and disadvantages. Practical based on the above topics.