College Biology Quiz
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CELL SIGNALING & CELL CYCLE
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In a study of neural development, researchers find that developing neurons initially produce high levels of a growth factor that promotes their own survival and growth. However, as these neurons mature and form connections with target cells, they gradually reduce production of this growth factor. If the connections with target cells are experimentally severed, the neurons resume high-level production of the growth factor. What type of feedback regulation does this represent?
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