Objective. To discuss the spinal presentation and treatment of paraganglioma, a rare tumor of the extra-adrenal paraganglia, derived from neural crest cells in sympathetic ganglions.
Objective: To explore effect of high-frequency electrical stimulation of extracellular (high frequency stimulation, HFS) on morphology and metabolism of sympathetic PC12 cells.
目的：研究细胞外高频电刺激(HFS)对PC 12类交感神经细胞的形态及代谢水平的影响。
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Conjunctival goblet cells and ocular surface epithelial cells, which are the main source of ocular surface mucin, appear to be under parasympathetic and sympathetic control.