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It is both, a and b. The JAK-STAT-Pathway sits below the Erb-receptor and is therefore giving the signal from mutated Erb down the signalling cascade. Besides that a permanent active version of Jak2 has been found which also permanently activates this pathway. Both are contributing to cancer. See this two articles: Molecular Pathways: JAK/STAT Pathway: ...


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i thnk it is MAP Kinase pathway b'coz RAS is a protein involved in this pathway and mutation in it lead to permanent attachment of GTP leading to cell proliferation causing carcer


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DIY Diffusion Experiment This procedure was done to see what happens qualitatively when semipermeable (dialysis) tubing containing a solution of glucose and protein is immersed in a solution of glucose alone. Given that water would diffuse into the bag, the question to be answered was whether there would be an equilibrium increase of sugar concentration ...



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