久久精品女人天堂?V麻,久久99精品久久久久久齐齐,国产精品天干天干在线观看,?级毛片久久免费观看,国产美女在线精品免费观看,日韩欧美啪啪一区二区毛片,久久精品99国产亚洲?v成人,最新熟妇精品国产偷自在线,国产老妇多毛精品一区二区

Triple filtered through 0.1 μm filters. Each lot of fetal bovine serum is tested for sterility and for the ability to support the growth of several different cell lines using both sequential growth curves and plating efficiencies. Fetal bovine serum is manufactured from fetal bovine blood collected in USDA-inspected abattoirs located in the United States.

Sterility tests are performed on each lot of fetal bovine serum using current USP and EP methods. Specific tests for contaminants are listed below in the Specification Certificate.  ATCC also checks each lot for its ability to support the growth of several different cell lines. Additionally, this lot of serum is tested for its ability to support the growth and differentiation of embryonic stem (ES) cells. Plating efficiency, colony morphology, and the expression of at least five markers of differentiation are determined for undifferentiated cells and cells induced to form embryoid bodies (EB) through full differentiation. The results are compared with cells grown with a control lot of serum.

Origin
This fetal bovine serum is manufactured from fetal bovine blood collected in USDA-inspected abattoirs located in the United States.