Evaluation of trace elements in dermatophytic infection, 1989 Study of Epidermodysplasia verruciformis by electron microscope. Study of immunological changes in morphea by indirect immunofluorescence test using monoclonal antibody. Electron microscopy study of acne vulgaris The effect of some drugs used in treatment of head lice, Hypo-osmotic sperm swelling test and acrosin activity test in fertile and infertile men, 1991 Hormonal study in patients with primary hirsutism and effect of oral contraceptive pills and spironolactone, 1991 Testicular affection in cases of lepromatous leprosy. Testicular affection in cases of lepromatous leprosy. Ultrastructure changes in pityrasis versicolor after treatment with itraconazole, 1994 Patch test: immunological and ultrastructural studies in contact dermatitis, 1994. Oral leukplakia: a clinical, histopathological and histochemical study, 1996. Histopathological, immunohistopathological ultrastructural study of post scabietic nodule, 1997 Vitiligo and HLA system, 1997. Study of the concentration of β- endorphin and cortisol in the sera of patients with psoriasis, 1998 Evaluation of single intraprostatic injection of antibiotic guided by transrectal sonography in patients with chronic bacterial prostatitis, 1998. Immunohistochemical study in patients with chronic venous insufficiency of the lower extremities, 2003. Immunoperoxiadase evaluation of lichen planus biopsies for hepatitis C virus, 2003 Nd:YAG laser vs IPL in inflammatory and noninflammatory acne lesion treatment The relation between androgenetic thin hair diagnosed by trichoscope and benign prostatic hyperplasia