99精品久久99久久久久,亚洲国产成人精品无码一区二区,国产精品亚洲综合色区韩国,久久精品第一国产久精国产宅男66,亚洲国产日韩欧美一区二区三区,久久久久久精品免费无码无,国产中年熟女高潮大集合,亚洲AV无码成H在线观看

The line was established from normal foreskin.

The line was established from normal foreskin.

male

Black

2 years

The line was established from normal foreskin.

The cells senesce after approximately 38 population doublings.

Subcultivation Ratio: A subcultivation ratio of 1:3 to 1:6 is recommended

Medium Renewal: Every 3 to 4 days

Remove spent medium, add fresh 0.25% trypsin, 0.03% EDTA solution, rinse and remove trypsin. Let the culture sit at room temperature (or at 37C) for 2 to 5 minutes. Add fresh medium, aspirate and dispense into new flasks. Subculture every 6 to 8 days.

Culture medium, 95%; DMSO, 5%