鸟胚中的刚毛结构来自于被称为基板（placode）的微小皮肤细胞结构，基板顶端快速增殖的细胞环形成了刚毛的圆柱井结构。
In the bird embryo these bristles erupt from tiny patches of skin cells called placodes. A ring of fast-growing cells on the top of the placode builds a cylindrical wall that becomes a bristle.
每个滤泡含有一个大量快速增殖的B细胞和吞噬细胞的构成的生发中心。
Each follicle contains a germinal center populated by rapidly proliferating B cells and macrophages.
目的：研究甲肝病毒在细胞内快速连续传代培养病毒增殖情况，探索疫苗生产工艺改进的可能性。
Objective: to study the proliferation of HAV which were cultured rapidly and consecutively in cells, and to investigate the possibility of improving the production process of inactivated HAV vaccine.
结果胚鼠室管膜源性神经干细胞在相应培养条件下呈现出神经干细胞快速增殖，形成由多细胞组成的细胞球（神经球）；
Results The NSCs derived from the fetal rat ependyma were observed to rapidly proliferate to form some cellular spheres or neural spheres consisting of NSCs.
在小鼠呼吸道表面(支气管上皮)发现的干细胞在病毒感染后快速增殖并迁移到损伤部位。
Stem cells found along the surfaces of the airways (in the bronchiolar epithelium) proliferate rapidly in mice after viral infection and migrate to sites of damage.
动物细胞体外培养时，生物反应器是整个培养过程的关键设备，为细胞提供一个适宜的生长环境，使之快速增殖并形成所需的生物组织制品。
Bioreactor is a key device during in vitro animal cell culture. It provides an appropriate growth environment for the cells, enabling them to proliferate and become the final bio-product.
动物细胞体外培养时，生物反应器是整个培养过程的关键设备，为细胞提供一个适宜的生长环境，使之快速增殖并形成所需的生物组织制品。
Bioreactor is a key device during in vitro animal cell culture. It provides an appropriate growth environment for the cells, enabling them to proliferate and become the final bio-product.
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