PDT：人口倍增时间

“人口倍增时间”在专业文献中常缩写为PDT，便于快速书写和学术交流。这一术语在医学尤其是英国医学领域中广泛应用，用于衡量人口规模翻倍所需的时间长度。

Population doubling time t were 18,17 and 267 days respectively.
种群加倍时间（t）18、17和267天。
The biological analysis results showed : Population Doubling Time(PDT) ( PDT ) of cells was approximately 24h;
生物学分析结果表明：细胞群体倍增时间（PDT）约为24小时；
Compared with NPC, proliferation capability of INPC was stronger, its proliferation index and proliferation rate were increased, population doubling time was shortened.
与原代NPC相比，INPC细胞增殖指数和增殖率升高，群体倍增时间缩短。
Otherwise, a Beijing yellow chicken embryo fibroblast cell line was successfully established using the primary explant technique and population doubling time of the cells was 39.7h.
另外，采用组织块直接培养法，对北京油鸡胚胎组织进行原代和继代培养，成功地建立了成纤维细胞系，该细胞系群体倍增时间为39.7h。
Methods Growth curve of HSC T6 was drawn and some basic indicators of HSC T6 cell biology were calculated, such as population doubling time and cloning efficiency.
方法经传代培养，绘制肝星状细胞HSC-T6的细胞生长曲线，并计算其细胞群体倍增时间和克隆形成率等基本的细胞生物学参数；

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