细胞外群 extracellular mass
外周血T细胞亚群 the outer sub-group of T cell
区细胞外顺向群锋电位 orthodromic population spike ; OPS
目的：通过培养人毛囊外根鞘细胞群，观察其增殖活性及细胞角蛋白k 19的表达。
AIM: to investigate the expression of cytokeratin K19 and proliferation capability in cultured follicular outer root sheath cells derived from plucked human sc alp hair.
卵丘是指在卵母细胞外周并与之进行代谢联系的颗粒细胞群； 卵丘对于卵母细胞成熟有极其重要的作用。
The present study was designed to investigate the influence of cumulus cells on maturation in vitro and pathenogenetic development of bovine oocytes.
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