... to a mutation within the -globin genes, there are over one hundred different mutations which can cause the disease. These different mutations include deletions, point mutations and insertions often in the control gene which effects the processing of the mRNA or the transcription of the gene, some of these mutation types can be seen in figure 4. Figure 4. Type of Mutation Description Affect ... achieved by the oncogene encoded product interacting at several points in the growth factor, receptors and signalling pathways which stimulate cell growth. The stages in this process can be seen i...

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• Grade Level: High School

... This may be tested on the spot for TB. In the past, detecting the presence of the TB strain was in many cases a time consuming process that would often delay therapy. Today, the use of genetic engineering techniques greatly reduces the time required for diagnosis (IJTL, 1999). Doctors can just ... of this program have been proven around the world. Epidemics in New York City, Tanzania, Peru, and China in the early 1990s were brought under control using DOTS. Migration, international air travel, and tourism also have contributed to the global spread of TB (Okie, 2000). The extreme difficul...

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