abstract   background: parosteal osteosarcoma is rare low-grade malignancy which arises on the surface of the metaphysis of long bones it has a low propensity to metastasize. different surgical treatment options including marginal resection, wide resection and amputation were recommended for the tumor. the purpose of the study was to assess the results of different surgical treatment of the les...

The laccase enzyme is the largest group of Oxidoreductase enzymes and is capable of oxidizing a wide range of organic substrates to water along with molecular oxygen resuscitation. ZnO nanoparticles are known for their specific properties such as chemical stability, high electrochemical coupling rates, and wide range of absorption of radiation as multifunctional compounds. In this study, ZnO po...