DNA size markers are widely used to estimate the size of DNA samples on agarose or polyacrylamide gelelectrophoresis (PAGE). DNA markers can be prepared by mixing PCR products with definite sizes.Alternatively, they are prepared by restriction enzyme digestion of the genomic DNA of bacteriophages ornatural and synthetic DNA plasmids. The present study describes engineering of ...

leadership, as mcdonald (1)argues, is a phenomenon which many people involved in healthcare around the globe put great emphasis on today; some even see the improvement of leadership as a panacea for all the ills of their healthcare system. this brief commentary on her work seeks to supplement the points she makes by emphasising the personalattractions leadership enjoys, at least in the eyes of ...

2 Alternative pre-mRNA Splicing 17 2.1 Alternative Splicing and its Role in Regulating Gene Activities and Generating Genetic Diversity 17 2.1.1 Different Patterns of Alternative Splicing 17 2.1.2 Alternative Splicing and Genetic Diversity 18 2.2 Mechanisms Underlying Alternative Splicing Regulation 19 2.2.1 Splicing Signals and Splicing Regulatory Elements 20 2.2.2 Trans-acting Splicing Regula...

this study was conducted to evaluate the responses of two greenhouse tomato cultivars to nutrient solutions' electrical conductivity (ec). two cluster type greenhouse tomato cultivars (razan and ergon) were grown in perlite in a glasshouse hydroponic system. the grown plants were daily fed with either constant ec nutrient solutions (ecs 2, 3 ds m-1) or nutrient solutions of alternatively c...