The growth factor Superchick stimulates the growth of cultur…
The growth factor Superchick stimulates the growth of cultured chicken cells. The receptor that binds Superchick is a receptor tyrosine kinase (RTK). Many tumor cell lines have mutations in the gene that encodes this receptor. Which one of the following mutations would be expected to promote uncontrolled (or, in other words, hyperactive) cell growth?
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