instead of PBS, you can put umbilical in lactate Ringer's solution. the Ringer's solution contains nutrient for cells and you get less cell death. If you worry bacteria contamination, you can use Ringer's solution containing antibiotics. Please, do wash umbilical with alcohol. to avoid bacteria contamination, you can culture cells in medium containing 2x antibiotic initially. After cells got 80% confluent, you pass cells and culture cells in medium containing 1x antibiotic. Surely, the alcohol can kill bacteria and stem both. 作者: 水念人倦 时间: 2014-8-29 13:44