单词	superfusion
释义	superfusion /ˌsuːpəˈfjuːʒ(ə)n / noun [mass noun] Physiology The technique of running a stream of liquid over the surface of a piece of suspended tissue, keeping it viable and allowing observation of the interchange of substances.In guard cells, artificial repetitive transients were produced by superfusion of epidermal strips with depolarizing and hyperpolarizing buffers.... The cause of the time-dependent loss of dye signal and increase in frequency of fluctuations remains unclear, but might be attributable to the washout of some key extra-mitochondrial factor during superfusion. Increasing the extracellular concentration of ammonium in whole-cell superfusion increases the intracellular alkalosis.
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