Initial drug resistance to some antituberculous drugs in qualiobia governorate. Sstudy of Immunolubulin A in Bronchoalveolar lavage and serum in patients with lung cancer. Carcino-embryonic antigen & some immunoglobulins in serum & Broncho-Alveolar lavage (BAL) of asymptomatic smokers ( Cigarette Vs Goza smokes) Evaluation of mast cell stabilizers in bronchial asthma Study of cellular and humoral immunity in patients with active and inactive pulmonary tuberculosis Diagnostic value of sialic acid in malignant and non malignant pleural effusion Diagnostic value of polymerase chain reaction (PCR) in tuberculous pleural effusion Bronchoalveolar lavage (BAL) fluid cellularity and ventilatory functions in chronic hepatitis (HCV) patients Nosocomial infections in respiratory failure patients in intensive care unit Rapid grower mycobacteria in pulmonary tuberculosis Initial drug resistance to some antituberculous in Qualiobia governorate Diagnostic value of Sialic acid in malignant and nonmalignant pleural effusion