The role of growth factor families in cancer prostate Hepatitis C infection, tumor necrosis factor receptors (R55 and R 75) and cryoglobulinaemia in cases of Non Hodgkin,s Lymphoma. Role of some trace elements in thyroid function in ambulatory elderly Apoptosis and cytoproliferative marker changes in chronic hepatitis C and hepatocellular carcinoma . Study of fasting serum insulin, insulin auto antibodies, islet cell antibodies and glucose tolerance in patients with chronic hepatitis C virus infection. New Electrochemilumenscence immunoassay for the determination of CYFRA 21-1 and its clinical diagnostic performance in urine samples of Egyptian patients with bladder cancer . Detection of active tuberculosis infection by T- cell response to ESAT- 6 and culture filtrate protein - 10 and increased gamma interferon producing cells . Evaluation of prognostic factors of anti - neutrophil cytoplasmic antibody (ANCA) associated - glomerulonephritis