赛默飞世尔Thermo Fisher X500 Lid st

Recovering Plasmids from your Stab Culture

-term storage is unknown. Most labs store bacteria in 15-25% glycerol. As an example, a 25% glycerol stock can be made by adding 500 μL of an overnight culture to 500 μL of 50% glycerol in a 2 mL screw top tube. Freeze the glycerol stock tube at -80o C

λ噬菌体DNA的制备方法

2O and autoclave the columns for re-use. Phage Lysis and DNA Concentration: 1. Add 10 µl of 0.1 mg/ml proteinase K (stock solution is 20 mg/ml stored at -20 degrees C) and 25 µ l of 10% SDS to the phage fraction from the column. Mix and let it sit at room

PRODUCTION OF COMPLETELY ES CELL-DERIVED FETUSES BY AGGREGATION WITH TETRAPLOID

of mannitol over the electrode chamber can not be used for longer that 10 - 15 minutes (it evaporates and the fusion becomes less efficient) and should be changed to fresh one after that time. Pass the group of 20-25 embryos through the drop of mannitol