The correlation between DNA ploidy, S-phase fraction, immunophenotyping and clinical outcome in childhood acute lymphoblastic leukaemia (ALL) The correlation of Haemoglobin A2 levels, viral load and CD4 levels in HIV infected patients pre and post treatment with HAAR7 The influence of low haematocrit values on platelet function in vitro ATG - The Pretoria experience. Assessing the response to combined Immunosuppression in patients aplastic anaemia. Significance of micro-organisms on the peripheral blood smear