提高磷酸盐浓度细胞生长周期缩短。
Increase of phosphate concentration increased cell growth rate and shortened the culture period.
目的：研究驻极体对成纤维细胞生长周期的影响及其调控机制。
Objective: to study the influence of electret field on fibroblast cell cycle and to probe its mechanism.
结果表明，光暗周期对硅藻胞外多糖生产的影响具有种间特异性，且与细胞生长周期有关。
The results showed that the influences of light-dark cycle on production of extracellular polysaccharide were species specific, and dependent on the growth phase.
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