To study the cell cycle block and inducing apoptosis effect of selenium chitosan on NB4 cells, the cell cycle block effect and inducing apoptosis effect were observed by using flow cytometry.

为研究硒化壳聚糖对NB 4细胞的凋亡及周期阻断作用，用流式细胞法观察了药物对细胞的诱导凋亡及周期阻断作用。

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If there was a dedicated cycle path that pedestrians did not block, as well as dog walkers, this would be the best for all.

BBC: Speedy Taff Trail cyclists in Cardiff told 'slow down'

The dedicated cycle trails in town are a good idea, but often seem to be an afterthought where cars frequently drive on them, or park and block them, or pedestrians use them instead and defeat the purpose of a dedicated cycle trail.

BBC: Speedy Taff Trail cyclists in Cardiff told 'slow down'