Tolerance of Oreochromis aureus (L.) fingerlings to various levels of salinity STUDIES ON INDUCED SPAWNING OF TILAPIA, OREOCHROMIS NILOTICUS (L.) Histopathological and Immunohistochemical Studies on the Adrenal Cortical Tumors of Egyptian Patients Histopathological and Immunohistochemical Studies on the Adrenal Medullary Tumors in Egyptian Patients THE PROTECTIVE ROLE OF SILYMARIN ON THE LIVER OF GAMMA-IRRADIATED RATS (A HISTOCHEMICAL AND QUALITATIVE STUDY) CHARACTERIZATION OF FASCIOLA HEPATICA AND FASIOLA GIGANTICA BY POLYMERASE CHAIN REACTION AND RESTRICTION ENDONUCLEASES DIGESTION OF THE NUCLEAR SMALL SUBUNIT RIBOSOMAL RNA GENE IMMUNOTOXICOLOGICAL STUDIES ON NATIVE BROILER"S CHICKENS TREATED WITH THE ANTIMYCOPLASMAL DRUG TIAMULIN (TIAMUTIN) AND VACCINATED WITHINFECTIOUS BURSAL DISEASE AND NEWCASTLE DISEASE VACCINES Silymarin protects the histological pattern of rat liver against radiation toxicity Do Gamma Rays of Cancer Radiotherapy Effect on the Sequence of Collagenase Gene? The pollutant effects of copper, zinc and lead on the histological patterns of fish kidney‏ Cyto and Genotoxic Effects of Zinc Oxide Nanoparticles on Testicular Tissue of Albino Rat and the Protective Role of Vitamin E