Methods Primary human corneal fibroblasts of passages 4 were used in this research.
方法原代培养角膜基质细胞，选取第4代细胞进行实验。
From book one to book three are passages specifically designed for foreign learners, but book 4 contains all the passages from contemporary magazines and periodicals.
从预订一本书有三个通道，专为外国学生，但第四册包含了所有通道，从当代杂志和期刊。
These cell colonies could be cultured at least up to 4 passages.
细胞克隆均至少能培养4代以上；
After a series of passages, the hereditary properties of the 4 fusion strains were found to be stable. Micechallenged.
连续传代证明4个融合株的双亲遗传特性是稳定的。
After more than 4 months of passage (approximately 26 passages), the cells still retained their characteristics.
在传代4个月后(约26代)，细胞仍然保持了其生物学特性。
After more than 4 months of passage (approximately 26 passages), the cells still retained their characteristics.
在传代4个月后(约26代)，细胞仍然保持了其生物学特性。
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