细胞发生

The total incidence of intracranial leukemic nfiltration in 50 leukemic autoptic cases was 90%.

50例白血病尸检患者的白血病细胞颅内浸润总发生率为90%。

Micrococcal nuclease treatment indicates that the remodeling of the demembranated sperm chromatin has occurred and the structure of nucleosome is formed during nuclear reconstitution.

同时，利用小球菌核糖核酸酶处理的果表明，去膜精子在此非细胞体系中发生改建并且在重建过程中形成核小体。

The factors which influenced somatic embryogenesis and plantlet regeneration in Picea meyeri Rehd. et Wils. were studied in order to establish a high frequency embryogenetic system.

摘要为建立白杄体细胞胚胎发生及再生的高频率实验系统，对聚乙二醇及干化处理的影响进行系统研究。

Alternatively, a new version of a gene can also be created through reverse transcription: during gene expression, the mRNA is copied back into a sequence of DNA that is inserted into the genome.

二，新的基因复本也可能透过反转录作用，将基因表现出来的mRNA反转录成DNA序列，再插回基因组内，这种现象称为反转录移位（retrotransposition），发生在细胞内称为长散布核因子（LINE）的转位子活动时。