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medulla |
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medullaCentral part of an organ. In the mammalian kidney, the medulla lies beneath the outer cortex and is responsible for the reabsorption of water from the filtrate. In plants, it is a region of packing tissue in the centre of the stem. In the vertebrate brain, the medulla is the posterior region responsible for the coordination of basic activities, such as breathing and temperature control. |
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| However, a new study has found brain stem anomalies that may be at fault. Stephanie Erlich, deputy county coroner, testified she had not inspected the brain stem and ``wouldn't have seen anything anyway,'' according to the opinion. Now, in an in vitro study using human brain stem cells, a team of German and Californian researchers shows how a specific PCB congener, PCB-118, can interrupt normal TH function and cause the premature differentiation of one type of brain cell [EHP 113:871-876]. |
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brain stem
